Closed-Loop Utilization of Molten Salts in Layered Material Preparation for Lithium-Ion Batteries

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作者：
Chen, Zhanjun [1 ,2 ]
Wang, Tao [1 ,3 ]
Yu, Haijun [4 ]
Guo, Jun [2 ]
Zhong, Hongbin [2 ]
Hu, Chuanyue [2 ]
Zhao, Ruirui [1 ]
Chen, Hongyu [1 ]
机构：
[1] School of Chemistry, Engineering Research Center of MTEES (Ministry of Education), South China Normal University, Guangdong,Guangzhou, China
[2] Hunan Provincial Key Laboratory of Fine Ceramics and Powder Materials, School of Materials and Environmental Engineering, Hunan University of Humanities, Science and Technology, Loudi,Hunan, China
[3] School of Materials Science and Engineering, Dongguan University of Technology, Dongguan,Guangdong, China
[4] Guangdong Brunp Recycling Technology Co., Ltd, Foshan,Guangdong, China
来源：
Frontiers in Energy Research | 2021年 / 8卷
关键词：
Molten-salt assisted solid-state synthesis is considered a promising method in obtaining layer-structured cathodes for lithium-ion batteries with homogeneous elemental distribution and controllable morphologies. However; drawbacks like resource wasting which have arisen from redundant salt removal after sintering greatly hinder the broader application of this technique. In this paper; a closed-loop utilization of molten salts is proposed for the first time with specific electrochemical properties of the products studied. Results confirm the feasibility of this strategy; and that with only replenishing LiOH; the recycled LiOH-LiCl molten salts can be successfully reused into another LiNi0.5Co0.2Mn0.3O2 synthesis; which exhibits almost equal electrochemical performance to the product using fresh molten salts. We believe this research can provide significant insight in guiding green and environmental-friendly preparation methods involving molten salts. © Copyright © 2021 Chen; Wang; Yu; Guo; Zhong; Hu; Zhao and Chen;
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