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        <title>Frontiers in Chemistry | Electrochemistry section | New and Recent Articles</title>
        <link>https://www.frontiersin.org/journals/chemistry/sections/electrochemistry</link>
        <description>RSS Feed for Electrochemistry section in the Frontiers in Chemistry journal | New and Recent Articles</description>
        <language>en-us</language>
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        <pubDate>2026-05-14T21:16:30.311+00:00</pubDate>
        <ttl>60</ttl>
        <item>
        <guid isPermaLink="true">https://www.frontiersin.org/articles/10.3389/fchem.2026.1840199</guid>
        <link>https://www.frontiersin.org/articles/10.3389/fchem.2026.1840199</link>
        <title><![CDATA[Electrolyte design and interface engineering for high-voltage solid-state lithium batteries]]></title>
        <pubdate>2026-05-13T00:00:00Z</pubdate>
        <category>Mini Review</category>
        <author>Xianzheng Liu</author><author>Nashrah Hani Jamadon</author><author>Yueyue Yu</author><author>Liancheng Zheng</author><author>Rongji Tang</author>
        <description><![CDATA[Solid-state lithium batteries (SSLBs) have attracted extensive attention as next-generation energy-storage systems because they offer improved safety and the possibility of coupling lithium metal anodes with high-energy cathodes. Among the many development directions of SSLBs, high-voltage systems are particularly important because they provide a direct pathway toward higher energy density. However, under high-voltage operation, typically above approximately 4.3 V versus Li+/Li but strongly dependent on cathode chemistry and state of charge, both the solid electrolyte and the electrode/electrolyte interface are subjected to severe electrochemical and structural challenges. Electrolyte oxidation, cathode-induced interfacial decomposition, space-charge effects, mechanical contact loss, and manufacturing difficulties jointly limit the practical performance of high-voltage SSLBs. This review systematically summarizes recent advances in electrolyte design for high-voltage SSLBs, covering inorganic solid electrolytes, polymer electrolytes, organic–inorganic composite electrolytes, gel polymer electrolytes, and quasi-solid-state electrolytes. In addition, the critical role of interface engineering is discussed with emphasis on cathode-side stabilization strategies, interphase regulation, and coating design. Finally, the major challenges and future research directions for high-voltage SSLBs are presented. The development of high-voltage SSLBs requires synergistic optimization of electrolyte chemistry, interfacial stability, and scalable processing strategies.]]></description>
      </item><item>
        <guid isPermaLink="true">https://www.frontiersin.org/articles/10.3389/fchem.2026.1829431</guid>
        <link>https://www.frontiersin.org/articles/10.3389/fchem.2026.1829431</link>
        <title><![CDATA[Advanced materials for high-performance electrochemical water-splitting: a review of recent breakthroughs, and future prospects]]></title>
        <pubdate>2026-05-08T00:00:00Z</pubdate>
        <category>Review</category>
        <author>Momna Qayyum</author><author>Sammia Shahid</author><author>Sana Mansoor</author><author>Urooj Fatima</author><author>Mohsin Javed</author><author>Salah Knani</author><author>Reem Alreshidi</author><author>Shahid Iqbal</author>
        <description><![CDATA[The sluggish HER/OER kinetics and the lack of dependable, highly efficient electrocatalysts limit the large-scale use of electrochemical water splitting, despite its potential as a sustainable hydrogen generating technique. This review presents comprehensive and mechanistically informed evaluation of the advanced electrocatalysts with particular emphasis on non-noble metal-based systems, including nanostructure surfaces, layer double hydroxides (LDH), metal-organic frameworks (MOFs), high-entropy materials (HEMs), perovskites, graphene-based materials, and covalent-organic frameworks (COFs). This review provides a unified framework for structure, property, and performance by correlating the strategies for the catalysts design, such the heteroatom doping, defect engineering, and the hybrid interface construction, with that of the key performance metrics including the current density, stability, cell voltage, and overpotential. Additionally, the influence of the operating conditions is also considered to offer more realistic perspective on the performance of the catalysts across the different electrochemical environments. Through the critical evaluation of the recent advancements, this review identifies key trends governing the catalytic behavior including the role of the active site engineering, interfacial effects, and the modulation of the electronic structure. This review outlines the actionable strategies which are aimed at bridging the gap between the laboratory-scale studies and the industrial water splitting, thus offering a rational framework for the development of the next-generation electrocatalysts for sustainable hydrogen production.]]></description>
      </item><item>
        <guid isPermaLink="true">https://www.frontiersin.org/articles/10.3389/fchem.2026.1799700</guid>
        <link>https://www.frontiersin.org/articles/10.3389/fchem.2026.1799700</link>
        <title><![CDATA[Facile synthesis of rGO/NiWO4 hybrid electrocatalyst for enhanced oxygen evolution reaction in alkaline medium]]></title>
        <pubdate>2026-04-28T00:00:00Z</pubdate>
        <category>Original Research</category>
        <author>D. J. Patil</author><author>D. B. Malavekar</author><author>V. C. Lokhande</author><author>J. H. Kim</author><author>C. D. Lokhande</author>
        <description><![CDATA[Growing energy consumption and concerns regarding the effects of global warming are driving development of greener energy alternatives. Green hydrogen production and consumption are essential in modern energy conversion and storage. The progression of water splitting technologies for sustainable hydrogen production relies on the development of efficient and cost-effective electrocatalysts for the oxygen evolution reaction (OER). Here, we present nickel tungstate (NiWO4) and reduced graphene oxide composited nickel tungstate (rGO/NiWO4) synthesis via an easily processable successive ionic layer adsorption and reaction (SILAR) method, and its OER performance in an alkaline electrolyte. While NiWO4 exhibited poor OER performance and stability, the incorporation of rGO significantly stabilized the composite electrode and extended its stability. The introduction of rGO reduced the charge transfer resistance and enhanced the surface area of the composite electrode compared to NiWO4. As a result, rGO/NiWO4 electrocatalyst exhibited a lower overpotential of 210 ± 10 mV at 50 mA cm−2 and a Tafel slope of 60 ± 3 mV dec−1, compared to NiWO4 (260 ± 13 mV, 60 ± 3 mV dec−1), showing enhanced catalytic performance. Additionally, the composite electrode demonstrated long term stability, over 50 h of continuous operation. These findings demonstrate rGO/NiWO4 as a promising OER electrocatalyst for efficient water splitting.]]></description>
      </item><item>
        <guid isPermaLink="true">https://www.frontiersin.org/articles/10.3389/fchem.2026.1789044</guid>
        <link>https://www.frontiersin.org/articles/10.3389/fchem.2026.1789044</link>
        <title><![CDATA[Editorial: Electrochemistry of rechargeable aqueous metal-ion batteries: recent advances and future opportunities]]></title>
        <pubdate>2026-01-26T00:00:00Z</pubdate>
        <category>Editorial</category>
        <author>Le Li</author><author>Runming Tao</author>
        <description></description>
      </item><item>
        <guid isPermaLink="true">https://www.frontiersin.org/articles/10.3389/fchem.2026.1744630</guid>
        <link>https://www.frontiersin.org/articles/10.3389/fchem.2026.1744630</link>
        <title><![CDATA[The effect of fluorides in the TiO2(B) anode on the hydrogen evolution reaction in aqueous electrolytes]]></title>
        <pubdate>2026-01-23T00:00:00Z</pubdate>
        <category>Original Research</category>
        <author>Khoi-Nguyen Nguyen</author><author>Lam Hoang Nguyen</author><author>Jozel John Salvacion</author><author>Nam Huu Nhat Nguyen</author><author>Samuel Ming Tuk Yeung</author><author>Seung Woo Lee</author><author>Liat Rosenfeld</author><author>Chengyu Song</author><author>Dahyun Oh</author>
        <description><![CDATA[For aqueous lithium-ion batteries (A-LIBs), the hydrogen evolution reaction (HER) poses a significant challenge, as it competes with the primary electrochemical processes of the anode, resulting in capacity loss and reduced cycling stability. In this study, we investigate the use of fluorine-based additives in anodes to mitigate HER in LIBs with aqueous electrolytes including low or high amounts of salt (water-in-salt electrolytes (WiSE)). We synthesized and incorporated three distinct materials into TiO2(B) anodes: aluminum fluoride (AlF3), lithium fluoride (LiF), and 1H,1H,2H, 2H-perfluorooctyltriethoxysilane (FAS) using a solution-based method. Among these fluorides containing composite anodes, FAS containing anodes delayed HER onset potentials of WiSE by 45–160 mV (1.2 m (molality) or 21 m (Lithium bis (trifluoromethanesulfonyl) imide in H2O)) compared to the bare TiO2 (B) anodes. Among these fluorides, FAS demonstrated the highest HER delay with the smallest amount of additives due to its hydrophobic nature. These findings underscore the effect of fluorine-based passivation layers in mitigating the HER, potentially expanding the energy density, and improving the operational stability of anodes in A-LIBs, thereby paving the way for their broader application in sustainable energy storage.]]></description>
      </item><item>
        <guid isPermaLink="true">https://www.frontiersin.org/articles/10.3389/fchem.2025.1724936</guid>
        <link>https://www.frontiersin.org/articles/10.3389/fchem.2025.1724936</link>
        <title><![CDATA[Editorial: Advances in two-dimensional materials for electrochemical energy conversion and storage]]></title>
        <pubdate>2025-12-08T00:00:00Z</pubdate>
        <category>Editorial</category>
        <author>Chenhui Yang</author><author>Yi Tang</author>
        <description></description>
      </item><item>
        <guid isPermaLink="true">https://www.frontiersin.org/articles/10.3389/fchem.2025.1698673</guid>
        <link>https://www.frontiersin.org/articles/10.3389/fchem.2025.1698673</link>
        <title><![CDATA[Hydroxyapatite particles substituted with Pd ions for remarkable antibacterial performance]]></title>
        <pubdate>2025-09-25T00:00:00Z</pubdate>
        <category>Original Research</category>
        <author>Seung-Jae Jeong</author><author>Yoon-Seop Jeong</author><author>Jae-Won Jeong</author><author>Heesoo Lee</author><author>Young-Tae Kwon</author>
        <description><![CDATA[The increasing threat of bacterial infections to human health has positioned the development of antibacterial materials as a critical global research priority. Recently, hydroxyapatite (HAP), which is chemically similar to the main components of bone and teeth, has attracted considerable attention as a promising antibacterial material due to its ability to inhibit bacterial adhesion and proliferation through electrostatic repulsion. However, hydroxyapatite exhibits lower antibacterial activity compared to metal particles or metal ions, which remains a limitation for its application as an antibacterial agent. Here, we present simple and one-step synthesis of the hydroxyapatite particles partially substituted with palladium (Pd) ions. The designed reaction simultaneously allows the formation of HAP particles and the substitution of Calcium ions (Ca2+) with Pd2+ ions within the HAP lattice. While the pure HAP particles show an antibacterial activity of approximately 97.5%, Pd-5% substituted HAP demonstrates ultrahigh antibacterial performance exceeding 99.9% against three different bacteria, including Staphylococcus aureus, Klebsiella pneumoniae, and Escherichia coli. This study comprehensively investigates the correlation between the Pd substitution and antibacterial ability, providing valuable insights for the development of advanced antibacterial materials aimed at promoting human health and a safe, clean environment.]]></description>
      </item><item>
        <guid isPermaLink="true">https://www.frontiersin.org/articles/10.3389/fchem.2025.1592695</guid>
        <link>https://www.frontiersin.org/articles/10.3389/fchem.2025.1592695</link>
        <title><![CDATA[Trace phenol-formaldehyde resin activation mechanism of intermediate graphitic layer removal in carbon for enhanced Li-ion capacitor performance]]></title>
        <pubdate>2025-09-22T00:00:00Z</pubdate>
        <category>Original Research</category>
        <author>Yingkai Xia</author><author>Shuang Wei</author><author>Xiao Wei</author><author>Yuehui Chen</author><author>Jiahang Ding</author><author>Haoyuan Zheng</author><author>Sen Yang</author><author>Shaobin Yang</author>
        <description><![CDATA[Precise modulation of the pore structure in activated carbon can further enhance the capacitance performance of supercapacitors. As a carbonaceous precursor, phenol-formaldehyde resin (PR) plays a dual role in both carbon deposition and activation for pore regulation; however, the activation mechanism governing its pore-tuning effect remains unclear. In this study, trace PR with a mass ratio of 0.2%–0.8% was mixed with activated carbon for heat treatment. The results revealed that trace amounts of PR exhibit an activation mechanism by selectively removing intermediate graphene layers. Specifically, the removal of one–three graphene layers resulted in the formation of periodic micropores with diameters of 0.50–0.56 nm, 0.81–0.90 nm, and 1.14–1.19 nm. Correlation analysis demonstrated that the pore size most strongly associated with lithium-ion capacitance and diffusion coefficients fell within the range formed by the removal of a single graphene layer. Compared with one-step activation using PR, the multi-step activation process slowed the rate of pore expansion following single-layer removal, facilitating the formation of a greater proportion of 0.54 nm pores—those most closely linked to enhanced capacitance and ion diffusion. Consequently, the prepared coal-derived activated carbon achieved a capacitance of 164 F g-1, matching the highest reported values for aqueous lithium-ion capacitors using porous carbon (PC) materials. This study reveals a novel mechanism of precise pore modulation at the 0.01 nm scale through trace PR activation, providing new insights into the structural regulation of PC materials for advanced energy storage applications.]]></description>
      </item><item>
        <guid isPermaLink="true">https://www.frontiersin.org/articles/10.3389/fchem.2025.1656451</guid>
        <link>https://www.frontiersin.org/articles/10.3389/fchem.2025.1656451</link>
        <title><![CDATA[One-pot hydrothermal oxidation enables in situ construction of CDs/Ni(OH)2 composite for electrocatalytic oxygen evolution]]></title>
        <pubdate>2025-09-04T00:00:00Z</pubdate>
        <category>Original Research</category>
        <author>Hui Wang</author><author>Weijuan Xu</author><author>Xuan Han</author><author>Yue Yan</author><author>Bingxian Zhu</author><author>Zhiyuan Wang</author><author>Libo Wang</author><author>Qingshan Zhao</author><author>Mingbo Wu</author>
        <description><![CDATA[Electrochemical water splitting is a promising solution to energy challenges, yet the kinetically sluggish oxygen evolution reaction (OER) at the anode demands highly active and cost-effective catalysts. Herein, we develop a facile one-pot hydrothermal oxidation strategy to simultaneously achieve the oxidative cleavage of petroleum coke into nanoscale carbon dots (HO-CDs) and the in situ growth of nickel hydroxide (Ni(OH)2) on nickel foam (NF), yielding an HO-CDs-Ni(OH)2/NF composite catalyst. The in situ-formed HO-CDs efficiently modulate Ni(OH)2 crystallization by suppressing oriented growth to create a nanostructure with abundant active sites. This synergistic interplay significantly enhances both active site accessibility and charge transfer efficiency, leading to exceptional OER performance. The optimized HO-CDs-Ni(OH)2/NF catalyst delivers an overpotential of 353 mV at a current density of 50 mA cm-2 with a small Tafel slope of 81.2 mV dec−1. Furthermore, it demonstrates excellent stability, retaining 92% of its initial current density after a 24-h chronoamperometric test. This work presents a straightforward approach for designing high-performance transition metal-based electrocatalysts through carbon dot-mediated crystal engineering via in situ incorporation.]]></description>
      </item><item>
        <guid isPermaLink="true">https://www.frontiersin.org/articles/10.3389/fchem.2025.1635084</guid>
        <link>https://www.frontiersin.org/articles/10.3389/fchem.2025.1635084</link>
        <title><![CDATA[Electrodeposition of nanocrystalline FeXCo1-X thin films from choline chloride–urea deep eutectic solvents]]></title>
        <pubdate>2025-09-01T00:00:00Z</pubdate>
        <category>Original Research</category>
        <author>Tingjun Wu</author><author>Jiwon Kim</author><author>Yong-Ho Choa</author><author>Nosang V. Myung</author>
        <description><![CDATA[FexCo1-x thin films were electrodeposited from a choline–urea deep eutectic solvent (DES) containing Fe3+ and Co2+ ions under ambient conditions. Anomalous co-deposition was observed, with Fe preferentially depositing over Co. With higher cathodic potential, the film’s morphology shifted from smooth to nodular. X-ray diffraction (XRD) analysis showed iron oxide impurities at lower overpotential and temperatures (e.g., <−0.9 V at 70 °C), while impurity-free, nanocrystalline Co50Fe50 films had formed at higher temperatures (e.g., 130 °C). The films exhibited a body-centered cubic (BCC) structure with (110) preferred orientation and grain sizes of 30 nm–40 nm.]]></description>
      </item><item>
        <guid isPermaLink="true">https://www.frontiersin.org/articles/10.3389/fchem.2025.1659479</guid>
        <link>https://www.frontiersin.org/articles/10.3389/fchem.2025.1659479</link>
        <title><![CDATA[Blue energy recovery in the Atacama Desert using electrochemical ion pumping devices: a Chilean perspective on salinity gradient energy]]></title>
        <pubdate>2025-08-19T00:00:00Z</pubdate>
        <category>Perspective</category>
        <author>Felipe M. Galleguillos Madrid</author><author>Sebastián Salazar-Avalos</author><author>Markus Bergendahl</author><author>Javier Quispe</author><author>Norman Toro</author><author>Galvarino Casanueva-Yáñez</author><author>Alvaro Soliz</author>
        <description><![CDATA[The growing global demand for clean and sustainable energy has intensified the development of novel technologies capable of harnessing naturally available resources. Among these, blue energy, referring to the power generated from the mixing of waters with different salinities, has emerged as a promising yet underutilized source. This perspective presents a comprehensive synthesis of recent advances in electrochemical harvesting systems, with a particular focus on Mixing Entropy Batteries (MEBs) as efficient, membrane-free devices for salinity gradient energy recovery. Unlike conventional approaches such as Reverse Electrodialysis (RED) and Pressure Retarded Osmosis (PRO), which depend heavily on ion-exchange membranes and complex infrastructure, MEBs offer simplified and scalable architecture suitable for harsh environments and industrial effluents. The use of LiCl-based electrolytes enables significant blue energy recovery, achieving energy densities of 38.2 mJ/cm2 and power densities of 13.8 μW/cm2, with excellent cycling stability. This system leverages the high solubility of LiCl (832 g/L) to create steep salinity gradients, utilizing LiFePO4/FePO4 as the cathode and Ag/AgCl as the anode, with no observable performance degradation over 100 cycles. This work analyzes alternative electrode materials, including Prussian Blue analogues (copper hexacyanoferrate CuHCF), MnO2, BiOCl, and polypyrrole, and explores their integration with unconventional water sources such as industrial brines, hypersaline reject streams, and treated wastewater, particularly within the resource-constrained context of the Atacama Desert. This manuscript consolidates experimental data, device designs, and comparative performance metrics, providing a critical framework for advancing blue energy technologies. It also underscores their potential role in circular economy models and off-grid renewable energy systems solutions.]]></description>
      </item><item>
        <guid isPermaLink="true">https://www.frontiersin.org/articles/10.3389/fchem.2025.1630889</guid>
        <link>https://www.frontiersin.org/articles/10.3389/fchem.2025.1630889</link>
        <title><![CDATA[Thermally treated lanthanum oxide nanoparticles-embedded polyamide composite nanofiber membrane for enhanced mechanical properties and phosphorus adsorption kinetics]]></title>
        <pubdate>2025-07-24T00:00:00Z</pubdate>
        <category>Original Research</category>
        <author>Yun Young Choi</author><author>David M. Cwiertny</author><author>Nosang V. Myung</author>
        <description><![CDATA[Lanthanum oxide (La2O3) nanoparticles-embedded polyamide 6 nanofiber membranes were electrospun using hexafluoroisopropanol (HFIP) as the solvent. Unlike other solvents such as formic acid and an acetone: trifluoroacetic acid (ace: TFA) mixture, HFIP allowed La2O3 nanoparticles to remain well-suspended without altering their composition. Various material characterizations confirmed La2O3 nanoparticles are well embedded in polyamide nanofibers. The phosphorus uptake capacity remains consistent when La2O3 nanoparticles were embedded in polyamide 6 nanofibers (∼10.4 mg/g) compared to free suspended nanoparticles (∼10.3 mg/g). By optimizing post-thermal treatment, both mechanical strength (e.g., yield strength (σy) from 1.68 × 107 to 2.67 × 107 Pa) and adsorption kinetics (e.g., k2 from 2.63 × 10−2 to 1.49 × 10−1 g/(mg·min)) were improved. This study confirms that post thermal processing can be used to further enhance the mechanical properties of the composite nanofiber membrane while maintaining its phosphate adsorption capabilities and improved adsorption kinetics.]]></description>
      </item><item>
        <guid isPermaLink="true">https://www.frontiersin.org/articles/10.3389/fchem.2025.1656521</guid>
        <link>https://www.frontiersin.org/articles/10.3389/fchem.2025.1656521</link>
        <title><![CDATA[Two-dimensional vacancy-doped MXene nanomaterials for supercapacitors]]></title>
        <pubdate>2025-07-23T00:00:00Z</pubdate>
        <category>Mini Review</category>
        <author>Yi Tang</author><author>Zhao Bi</author><author>Yangyang Xie</author><author>Xiaodie Xuan</author><author>Chenhui Yang</author>
        <description><![CDATA[Supercapacitors (SCs) are high-performance electrochemical energy storage devices, and their performance hinges on the electrode materials. 2D MXene nanomaterials, with their excellent conductivity, tunable interlayer spacing, and rich surface chemistry, have emerged as highly promising electrode materials for SCs. However, the capacitive performance of intrinsic MXene fails to meet application requirements. This review first introduces the composition and principles of SCs in detail, then summarizes the pure MXene nanomaterials in SCs, and systematically explores the regulatory mechanisms of vacancy doping strategies on MXene material structure and capacitive performance. The study reveals the structure-property relationships, providing theoretical basis and direction for designing high-performance MXene-based SCs electrode materials.]]></description>
      </item><item>
        <guid isPermaLink="true">https://www.frontiersin.org/articles/10.3389/fchem.2025.1629904</guid>
        <link>https://www.frontiersin.org/articles/10.3389/fchem.2025.1629904</link>
        <title><![CDATA[Strongly coupling Cu with MoP for high-efficiency electrochemical nitrate-to-ammonia conversion and zinc-nitrate battery applications]]></title>
        <pubdate>2025-07-17T00:00:00Z</pubdate>
        <category>Original Research</category>
        <author>Chen Yang</author><author>Yuanyuan Chen</author><author>Zhimin He</author><author>Rong Li</author><author>Xinglong Gou</author>
        <description><![CDATA[The electrochemical nitrate reduction reaction (NITRR) offers a sustainable route for ammonia synthesis and environmental remediation but faces challenges such as sluggish kinetics and competing hydrogen evolution. This study aims to address these limitations by designing a Cu/molybdenum phosphide (MoP) heterostructure catalyst through one-pot calcination, which integrates Cu nanoparticles with MoP nanograins. Structural and electronic analyses confirm the formation of intimate Cu–MoP interfaces, where charge redistribution polarizes Cu to an electron-deficient state (Cuδ+) and enriches MoP with electrons. This configuration enhances nitrate adsorption on Cuδ+, while MoP efficiently supplies protons via accelerated water dissociation. The Cu/MoP catalyst achieves a record-high NH3 Faradaic efficiency (FE) of 98.93% and a yield rate of 30.72 mmol h−1 cm−2 at −0.5 V (vs. RHE), outperforming isolated Cu or MoP. When deployed in a Zn-nitrate battery, the composite cathode delivers a peak power density of 12.97 mW cm−2. This work provides a promising solution to the insufficient active hydrogen supply and poor NH3 conversion efficiency of Cu-based nitrate reduction catalysts.]]></description>
      </item><item>
        <guid isPermaLink="true">https://www.frontiersin.org/articles/10.3389/fchem.2025.1633529</guid>
        <link>https://www.frontiersin.org/articles/10.3389/fchem.2025.1633529</link>
        <title><![CDATA[Elucidating the aluminum storage mechanism in cobalt sulfide cathode materials for advanced batteries]]></title>
        <pubdate>2025-07-15T00:00:00Z</pubdate>
        <category>Original Research</category>
        <author>Ruiyuan Zhuang</author><author>Yongqing Li</author><author>Junhong Wang</author><author>Jianfeng Zhan</author><author>Jiangnan Yan</author><author>Yaru Chen</author><author>Wenhui Mo</author><author>Jun Zhang</author>
        <description><![CDATA[Rechargeable aluminum-ion batteries (AIBs), as novel energy storage systems featuring low-cost, high-energy density, and superior safety, demonstrate promising potential as a next-generation battery technology. However, the lack of high-performance cathode materials remains a critical barrier to practical implementation. In this study, highly crystalline cobalt sulfide (Co9S8) nanoparticles were synthesized using a one-step hydrothermal method and systematically evaluated their electrochemical performance and energy storage mechanisms in AIBs. Structural characterization revealed that while the synthesized material maintained high crystallinity, it formed agglomerates during the synthesis process that induced severe electrode polarization and limited ion diffusion kinetics. Electrochemical analysis demonstrated a reversible capacity of 48 mAh g−1 after 500 cycles at a current density of 100 mA g−1, indicating moderate cycling stability. DFT calculations with Bader charge analysis provided atomic-scale insights, revealing that Al3+ preferentially occupies Co. lattice sites through a pseudo-isomorphic substitution mechanism, exhibiting a 52.5% lower formation energy compared to S-site substitution. This work establishes critical correlations between morphological characteristics and electrochemical performance while proposing a novel cation substitution mechanism for energy storage. These findings provide fundamental insights for designing high-kinetics transition metal sulfide cathodes and advance the development of practical multivalent-ion battery systems.]]></description>
      </item><item>
        <guid isPermaLink="true">https://www.frontiersin.org/articles/10.3389/fchem.2025.1636683</guid>
        <link>https://www.frontiersin.org/articles/10.3389/fchem.2025.1636683</link>
        <title><![CDATA[Pseudocapacitive materials for energy storage: properties, mechanisms, and applications in supercapacitors and batteries]]></title>
        <pubdate>2025-06-27T00:00:00Z</pubdate>
        <category>Review</category>
        <author>Yi-Min Wei</author><author>Kulurumotlakatla Dasha Kumar</author><author>Long Zhang</author><author>Jian-Feng Li</author>
        <description><![CDATA[The growing demand for efficient energy storage has intensified interest in pseudocapacitive materials, known for their high-power density, rapid charge–discharge capabilities, and tunable physicochemical properties. This review explores the foundational principles and evolution of pseudocapacitive materials, emphasizing recent strategies to improve their electrochemical performance in supercapacitor applications. Key focus areas include: 1) intercalation-type materials such as Nb2O5, TiO2, and V2O5, which offer fast and reversible ion insertion without phase transitions; 2) redox-active materials like transition metal oxides and 2D materials (e.g., MXenes), which enhance charge storage through surface and near-surface Faradaic reactions; and 3) materials relying on surface adsorption mechanisms that enable ultrafast kinetics and excellent cycling stability. Special attention is given to nickel-based compounds NiO, Ni(OH)2, and related composites owing to their high theoretical capacitance, multiple valence states, and cost-effectiveness, making them promising for both supercapacitors and hybrid energy storage devices. The interplay between structural design, conductivity, and electrochemical behavior is critically assessed. Lastly, the review outlines current challenges and future directions in the development of scalable, high-performance pseudocapacitive materials. This work aims to guide the rational design of next-generation electrode materials for advanced supercapacitor technologies.]]></description>
      </item><item>
        <guid isPermaLink="true">https://www.frontiersin.org/articles/10.3389/fchem.2025.1631230</guid>
        <link>https://www.frontiersin.org/articles/10.3389/fchem.2025.1631230</link>
        <title><![CDATA[Retraction: A methylene blue assisted electrochemical sensor for determination of drug resistance of Escherichia coli]]></title>
        <pubdate>2025-05-29T00:00:00Z</pubdate>
        <category>Retraction</category>
        
        <description></description>
      </item><item>
        <guid isPermaLink="true">https://www.frontiersin.org/articles/10.3389/fchem.2025.1591302</guid>
        <link>https://www.frontiersin.org/articles/10.3389/fchem.2025.1591302</link>
        <title><![CDATA[Recent advances in glucose monitoring utilizing oxidase electrochemical biosensors integrating carbon-based nanomaterials and smart enzyme design]]></title>
        <pubdate>2025-04-28T00:00:00Z</pubdate>
        <category>Review</category>
        <author>Guan Guoqiang</author><author>Qu Liang</author><author>Zhao Yani</author><author>Wang Pengyun</author><author>Kong Fanzhuo</author><author>Zhang Yuyang</author><author>Lin Zhiyuan</author><author>Ni Xing</author><author>Zhang Xue</author><author>Lu Qiongya</author><author>Zou Bin</author>
        <description><![CDATA[Glucose oxidase (GOx), as a molecular recognition element of glucose biosensors, has high sensitivity and selectivity advantages. As a type of biosensor, the glucose oxidase electrode exhibits advantages such as ease of operation, high sensitivity, and strong specificity, promising broad application prospects in biomedical science, the food industry, and other fields. In recent years, with the advancement of nanotechnology, research efforts to enhance the performance of GOx biosensors have primarily focused on improving the conductive properties and specific surface area of nanomaterials, while neglecting the potential to modify the structure of the core component, GOx itself, to improve biosensor performance. Rapid modification of the GOx surface through chemical modification techniques yields a new modified enzyme (mGOx). Meanwhile, composite techniques involving carbon nanomaterials can be employed to further enhance sensor performance. This article reviews the construction methods and optimization strategies of glucose oxidase electrodes in recent years, along with research progress in their application in electrochemical sensing for glucose detection, and provides an outlook for future developments.]]></description>
      </item><item>
        <guid isPermaLink="true">https://www.frontiersin.org/articles/10.3389/fchem.2025.1613443</guid>
        <link>https://www.frontiersin.org/articles/10.3389/fchem.2025.1613443</link>
        <title><![CDATA[Editorial: Defect chemistry in electrocatalysis - volume II]]></title>
        <pubdate>2025-04-25T00:00:00Z</pubdate>
        <category>Editorial</category>
        <author>Dafeng Yan</author><author>Longlu Wang</author><author>Feng Zeng</author><author>Huawei Huang</author>
        <description></description>
      </item><item>
        <guid isPermaLink="true">https://www.frontiersin.org/articles/10.3389/fchem.2025.1515903</guid>
        <link>https://www.frontiersin.org/articles/10.3389/fchem.2025.1515903</link>
        <title><![CDATA[Efficient electrocatalytic reduction of CO2 on an Ag catalyst in 1-ethyl-3-methylimidazolium ethylsulfate, with its co-catalytic role as a supporting electrolyte during the reduction in an acetonitrile medium]]></title>
        <pubdate>2025-04-09T00:00:00Z</pubdate>
        <category>Original Research</category>
        <author>Sayyar Muhammad</author><author>Asad Ali</author>
        <description><![CDATA[CO2 electrochemical reduction reactions (CO2ERR) has shown great promise in reducing greenhouse gas emissions while also producing useful chemicals. In this contribution, we describe the CO2ERR at different catalysts using 1-ethyl-3-methylimidazolium ethyl sulfate [emim][EtSO4] ionic liquid (IL) as a solvent and as a supporting electrolyte. CO2ERR occurs at Ag and Cu catalysts at a lower overpotential than that at Au, Pt, and boron-doped diamond (BDD) catalysts. In addition, we report that ILs play a better co-catalytic role when used as a supporting electrolyte during CO2ERR in an acetonitrile (AcN) medium than the conventional supporting electrolyte, tetrabutylammonium hexafluorophosphate [TBA][PF6] in AcN. Furthermore, it is found that imidazolium-based cations ([emim]+) play a significant co-catalytic role during the reduction compared to [TBA]+ and pyrrolidinium [empyrr]+ cations, while anions of the ILs play no such role. The formation of CO from the CO2ERR was detected using cyclic voltammetry at an Ag catalyst both in [emim][EtSO4] as well as in an AcN solvent containing [emim][EtSO4] as a supporting electrolyte. The product of the CO2 reduction in this IL medium at the Ag catalyst is CO, which can be converted to synthetic liquid fuels by coupling the process with the Fischer–Tropsch process or through the conversion of CO2 into fuels based on green hydrogen by the Sabatier process, that is, methanation of CO2 on industrial scale, in the future.]]></description>
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