ORIGINAL RESEARCH article
Front. Chem.
Sec. Green and Sustainable Chemistry
Volume 13 - 2025 | doi: 10.3389/fchem.2025.1708033
This article is part of the Research TopicEco-Friendly Fabrication of Energy Storage Materials: From Batteries to SupercapacitorsView all articles
Conformal LATP Surface Engineering for Ni-Rich Cathodes: Enhancing Interfacial Stability and Thermal Safety in Lithium-Ion Batteries
Provisionally accepted
- 1Zhejiang Institute of Quality Sciences, Hangzhou, China
- 2China Research Institute of Regulation and Public Policy, Zhejiang University of Finance & Economics, Hangzhou, China
- 3Tianfeng Power Supply Co., Ltd., Hangzhou, China
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Enhancing the interfacial stability and thermal safety of Ni-rich layered oxide cathodes remains a critical challenge for the development of high-energy lithium-ion batteries. Herein, a conformal NASICON-type Li₁.₃Al₀.₃Ti₁.₇(PO₄)₃ (LATP) coating was applied to the surface of NCM811 particles via a facile wet-chemical method followed by thermal treatment. Transmission electron microscopy and energy-dispersive X-ray spectroscopy confirmed the uniform distribution of an amorphous LATP layer (~5–10 nm) on the cathode surface without penetrating the bulk. This LATP coating effectively suppressed interfacial side reactions, stabilized the electrode– electrolyte interface, and mitigated transition metal dissolution, resulting in significantly improved cycling stability and lower impedance growth during electrochemical operation. Importantly, comprehensive thermal runaway evaluations using pouch cells revealed that LATP modification increased the onset (T₁) and trigger (T₂) temperatures, extended the delay time to thermal runaway (Δt₁), and reduced the maximum temperature (T₃) and mass loss during abuse conditions. These improvements were preserved even after cycling-induced degradation (75% state of health), underscoring the coating's robustness. This study demonstrates a viable surface engineering strategy that synergistically enhances the electrochemical performance and intrinsic thermal safety of Ni-rich cathodes, providing valuable insights for the design of next-generation safe, high-energy lithium-ion batteries.
Keywords: Ni-rich layered oxide cathodes, LATP coating, Interfacial stability, Thermal runaway, lithium-ion batteries
Received: 18 Sep 2025; Accepted: 30 Sep 2025.
Copyright: © 2025 Xu, Wang, Geng, Ma, Qiu and Han. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence: Lan Wang, wangl@zjiqs.cn
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