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A Ternary Molten Salt Approach for Direct Regeneration of LiNi0.5 Co0.2 Mn0.3 O2 Cathode.
Qin, Zuoyu; Wen, Zuxin; Xu, Yifei; Zheng, Zhicheng; Bai, Mingliang; Zhang, Ning; Jia, Chuankun; Wu, Hao Bin; Chen, Gen.
Afiliación
  • Qin Z; School of Materials Science and Engineering, Central South University, Changsha, 410083, China.
  • Wen Z; School of Materials Science and Engineering, Central South University, Changsha, 410083, China.
  • Xu Y; School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, China.
  • Zheng Z; School of Materials Science and Engineering, Central South University, Changsha, 410083, China.
  • Bai M; School of Materials Science and Engineering, Central South University, Changsha, 410083, China.
  • Zhang N; School of Materials Science and Engineering, Central South University, Changsha, 410083, China.
  • Jia C; College of Materials Science and Engineering, Changsha University of Science & Technology, Changsha, 410114, China.
  • Wu HB; School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, China.
  • Chen G; School of Materials Science and Engineering, Central South University, Changsha, 410083, China.
Small ; 18(43): e2106719, 2022 Oct.
Article en En | MEDLINE | ID: mdl-35182009
Recycling spent lithium-ion batteries (LIBs) is an urgent task in view of the resource shortage and environmental concerns. Here, a facile ternary molten salt approach is presented for efficiently regenerating the LiNi0.5 Co0.2 Mn0.3 O2 (NCM523) cathode of spent LIBs. Such an approach involves the treatment of spent cathode powder in the ternary molten salt at a moderate temperature (400 °C) and subsequent annealing in oxygen. The Li loss and degraded phases in spent NCM that cause the capacity decay can be fully remedied after the regeneration process. As a result, the regenerated cathode delivers a reversible capacity of 160 mAh g-1 at 0.5 C with retention of 93.7% after 100 cycles and maintains a high capacity of 132 mAh g-1 at a high rate of 5 C. The electrochemical performance of regenerated NCM cathode is compared favorably to the fresh NCM cathode, which demonstrates the feasibility of the molten salt approach to directly regenerate spent NCM cathode.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Small Asunto de la revista: ENGENHARIA BIOMEDICA Año: 2022 Tipo del documento: Article País de afiliación: China Pais de publicación: Alemania
Texto completo
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XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Small Asunto de la revista: ENGENHARIA BIOMEDICA Año: 2022 Tipo del documento: Article País de afiliación: China Pais de publicación: Alemania