ORIGINAL RESEARCH article
Front. Chem.
Sec. Solid State Chemistry
Volume 13 - 2025 | doi: 10.3389/fchem.2025.1628941
This article is part of the Research TopicApplications and Advances of Carbon-based Materials in ElectrochemistryView all 4 articles
Study on the Structure-Performance Relationship Between Binder Types and Aluminum-Based Lithium Adsorbent
Provisionally accepted
Ben MaXiaoyu WangJing ZhouLijuan ZhangRuibin LiuLi SuWenlong Wang
Qinglei Wang*
Ping Li*Xuehui Shangguan*Faqiang Li*- Linyi University, Linyi, China
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Aluminum lithium layered double hydroxides adsorbents (Li/Al-LDH) are used in industry due to their mild adsorption/desorption conditions, good stability and low cost. However, traditional powdered aluminum lithium adsorbents exhibit poor fluidity and a relatively high dissolution rate. The granulation strategy using binders is employed to address the aforementioned challenges. Nevertheless, there is a lack of systematic research on the relationship between the type of binder and the adsorption and desorption efficiency, as well as the kinetics and thermodynamic mechanisms of mass transfer. This work focuses on the structure-activity relationship between adsorbents and three binders (polyvinyl chloride (PVC), polyvinylidene fluoride (PVDF) and calcium alginate (SA)). The experimental results demonstrate that the adsorption/desorption performance of the adsorbent varied significantly with temperature depending on binder type. It is noted that the structures of PVDF-LDH and PVC-LDH changed during temperature changes, resulting in decreased adsorption and desorption performance. While the SA-LDH can maintain good structural stability and adsorption and desorption capabilities. Besides, in 300 ppm LiCl solution, SA-LDH presents a high adsorption and desorption capacity, with the maximum desorption capacity at 40°C being 5.84 mg/g and the maximum adsorption capacity at 60°C being 5.67 mg/g. This study elucidates the regulatory mechanisms of temperature on adsorption/desorption behaviors in binder-formulated granulated adsorbents, providing critical insights for optimizing industrial aluminum-based lithium adsorbents in salt lake lithium extraction.
Keywords: aluminum-based lithium adsorbents, Granulation, Binders, Adsorption-desorption, Salt lake
Received: 15 May 2025; Accepted: 03 Sep 2025.
Copyright: © 2025 Ma, Wang, Zhou, Zhang, Liu, Su, Wang, Wang, Li, Shangguan and Li. 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:
Qinglei Wang, Linyi University, Linyi, China
Ping Li, Linyi University, Linyi, China
Xuehui Shangguan, Linyi University, Linyi, China
Faqiang Li, Linyi University, Linyi, China
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