Your browser doesn't support javascript.
loading
A uniform and high-voltage stable LiTMPO4 coating layer enabled high performance LiNi0.8Co0.15Mn0.05O2 towards boosting lithium storage.
Dong, Hang; Sun, Du; Xie, Miao; Cai, Mingzhi; Zhang, Zhuang; Cai, Tianxun; Dong, Wujie; Huang, Fuqiang.
Afiliación
  • Dong H; State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China. dongwujie@mail.sic.ac.cn.
  • Sun D; Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Science, Beijing 100049, China.
  • Xie M; State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China. dongwujie@mail.sic.ac.cn.
  • Cai M; State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China. dongwujie@mail.sic.ac.cn.
  • Zhang Z; Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Science, Beijing 100049, China.
  • Cai T; State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.
  • Dong W; State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China. dongwujie@mail.sic.ac.cn.
  • Huang F; Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Science, Beijing 100049, China.
Dalton Trans ; 51(33): 12532-12539, 2022 Aug 23.
Article en En | MEDLINE | ID: mdl-35912983
LiTMPO4 materials, such as LiNiPO4, can maintain structural stability and Li+ transport activity up to 4.8 V, showing great potential to stabilize layered nickel-rich cathodes at high voltage. But achieving a uniform LiTMPO4 coating layer remains a great challenge. Herein, an ultrathin and uniform LiTMPO4 layer (mainly LiNiPO4) is successfully coated on the surface of LiNi0.8Co0.15Mn0.05O2 (NMC@LTMP) via utilizing the surface chelation of phytic acid with NMC precursors and a subsequent high-temperature in situ reaction. The reconstructed surface and interface could act as stable paths for Li+ transport and efficient barriers against electrolyte corrosion. Thus, harmful side reactions like solid electrolyte interphase overgrowth, irreversible phase transformation, and metal dissolution are inhibited simultaneously. Impressively, the optimized NMC@LTMP2 cathode exhibits remarkably improved capacity, as high as 215 mA h g-1 at 2.8-4.5 V, with capacity retention of 87.21% after 200 cycles and outstanding rate capability of 140 mA h g-1 at 10C, significantly better than a pristine cathode. Furthermore, a pouch cell assembled with an NMC@LTMP2 cathode and graphite anode also exhibits robust capacity retention of 82.42% after 100 cycles. These results provide useful insights towards enabling the application of NMC cathodes via developing facile modification methods.
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Dalton Trans Asunto de la revista: QUIMICA Año: 2022 Tipo del documento: Article País de afiliación: China Pais de publicación: Reino Unido
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Dalton Trans Asunto de la revista: QUIMICA Año: 2022 Tipo del documento: Article País de afiliación: China Pais de publicación: Reino Unido