Source abstract
Abstract
ABSTRACT Solvent‐based battery recycling plays a pivotal role in mitigating metal demand pressures and advancing the circular economy. While numerous recycling strategies focus on enhancing the leaching efficiency of critical metals, the purification and refinement of leached lithium ions remain significant challenges. To address this bottleneck, we propose a strategy integrating element separation and nucleation control to remove impurities from lithium‐enriched solutions and precipitate lithium ions. This approach employs a lanthanum‐based adsorbent for purification and ultrafine nanobubbles for the preparation of battery‐grade Li 2 CO 3 (BG‐Li 2 CO 3 ). The process ensures complete removal of all impurity elements from the lithium‐enriched solution, with the impurity‐removing agents being recyclable. The synthesized LiFePO 4 (LFP) exhibits a higher mean voltage (3.42 V vs Li/Li⁺) and energy density (527 Wh kg− 1 ) compared to commercial LFP counterparts. Techno‐economic‐environmental analysis demonstrates that the ultrafine nanobubble nucleation strategy significantly streamlines the purification and refinement process, offering a sustainable method for lithium extraction from salt lakes, ores, and spent lithium batteries, while also enabling efficient CO 2 utilization across these applications.
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Research context
OpenAlex topics: Extraction and Separation Processes · Minerals Flotation and Separation Techniques · Recycling and Waste Management Techniques
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Affiliations
Guangzhou Institute of Energy Conversion Chinese Academy of Sciences (CAS) Guangzhou P. R. China
School of Energy Science and Engineering University of Science and Technology of China Hefei P. R. China
Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development Guangzhou P. R. China
Guangdong Provincial Key Laboratory of High‐Quality Recycling of End‐of‐Life New Energy Devices Guangzhou P. R. China
Faculty of Materials and Manufacturing Beijing University of Technology Beijing P. R. China
State Key Laboratory of Mesoscience and Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing P. R. China
Funding
National Natural Science Foundation of China
References (20)
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