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Homogeneously Planar-Exposure LiB Fiber Skeleton Toward Long-Lifespan Practical Li Metal Pouch Cells.
Long, Kecheng; Liu, Xinsheng; Yang, Jixu; Wang, Han; Wang, Anbang; Chen, Yuejiao; Mei, Lin; Zhang, Yu; Wu, Zhibin; Wang, Weikun; Jin, Zhaoqing; Chen, Libao.
Afiliación
  • Long K; State Key Laboratory of Powder Metallurgy, Central South University, Changsha, 410083, P. R. China.
  • Liu X; Research Institute of Chemical Defense, Beijing, 100191, China.
  • Yang J; State Key Laboratory of Powder Metallurgy, Central South University, Changsha, 410083, P. R. China.
  • Wang H; State Key Laboratory of Powder Metallurgy, Central South University, Changsha, 410083, P. R. China.
  • Wang A; Beihang University, Beijing, 100191, China.
  • Chen Y; Research Institute of Chemical Defense, Beijing, 100191, China.
  • Mei L; State Key Laboratory of Powder Metallurgy, Central South University, Changsha, 410083, P. R. China.
  • Zhang Y; State Key Laboratory of Powder Metallurgy, Central South University, Changsha, 410083, P. R. China.
  • Wu Z; Beihang University, Beijing, 100191, China.
  • Wang W; State Key Laboratory of Powder Metallurgy, Central South University, Changsha, 410083, P. R. China.
  • Jin Z; Research Institute of Chemical Defense, Beijing, 100191, China.
  • Chen L; Research Institute of Chemical Defense, Beijing, 100191, China.
Small ; 20(36): e2311193, 2024 Sep.
Article en En | MEDLINE | ID: mdl-38739093
ABSTRACT
LiB alloy is promising lithium (Li) metal anode material because the continuous internal LiB fiber skeleton can effectively suppress Li dendrites and structural pulverization. However, the unvalued surface states limit the practical application of LiB alloy anodes. Herein, the study examined the influence of the different exposure manners of the internal LiB fiber skeleton owing to the various surface states of the LiB alloy anode on electrochemical performance and targetedly proposed a scalable friction coating strategy to construct a lithiated fumed silica (LFS) functional layer with abundant electrochemically active sites on the surface of the LiB alloy anode. The LFS significantly suppresses the inhomogeneous interfacial electrochemical behavior of the LiB alloy anode and enables the exposure of the internal LiB fiber skeleton in a homogeneously planar manner (LFS-LiB). Thus, a 0.5 Ah LFS-LiB||LiCoO2 (LCO) pouch cell exhibits a discharge capacity retention rate of 80% after 388 cycles. Moreover, a 6.15 Ah LFS-LiB||S pouch cell with 409.3 Wh kg-1 exhibits a discharge capacity retention rate of 80% after 30 cycles. In conclusion, the study findings provide a new research perspective for Li alloy anodes.
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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: 2024 Tipo del documento: Article Pais de publicación: Alemania
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: Small Asunto de la revista: ENGENHARIA BIOMEDICA Año: 2024 Tipo del documento: Article Pais de publicación: Alemania