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Designing Compatible Ceramic/Polymer Composite Solid-State Electrolyte for Stable Silicon Nanosheet Anodes.
Liu, Xianzheng; Wang, Dong; Wang, Xintong; Wang, Deyu; Li, Yan; Fu, Jie; Zhang, Rui; Liu, Zhiyuan; Zhou, Yuanzhao; Wen, Guangwu.
Afiliación
  • Liu X; School of Materials Science and Engineering, Shandong University of Technology, Zibo, 255000, P. R. China.
  • Wang D; School of Materials Science and Engineering, Shandong University of Technology, Zibo, 255000, P. R. China.
  • Wang X; Shandong Silicon Nano New Material Technology Co. LTD, Zibo, 255000, P. R. China.
  • Wang D; School of Materials Science and Engineering, Shandong University of Technology, Zibo, 255000, P. R. China.
  • Li Y; School of Materials Science and Engineering, Shandong University of Technology, Zibo, 255000, P. R. China.
  • Fu J; School of Materials Science and Engineering, Shandong University of Technology, Zibo, 255000, P. R. China.
  • Zhang R; School of Materials Science and Engineering, Shandong University of Technology, Zibo, 255000, P. R. China.
  • Liu Z; School of Materials Science and Engineering, Shandong University of Technology, Zibo, 255000, P. R. China.
  • Zhou Y; School of Materials Science and Engineering, Shandong University of Technology, Zibo, 255000, P. R. China.
  • Wen G; School of Materials Science and Engineering, Shandong University of Technology, Zibo, 255000, P. R. China.
Small ; 20(25): e2309724, 2024 Jun.
Article en En | MEDLINE | ID: mdl-38239083
ABSTRACT
The commercialization of silicon anode for lithium-ion batteries has been hindered by severe structure fracture and continuous interfacial reaction against liquid electrolytes, which can be mitigated by solid-state electrolytes. However, rigid ceramic electrolyte suffers from large electrolyte/electrode interfacial resistance, and polymer electrolyte undergoes poor ionic conductivity, both of which are worsened by volume expansion of silicon. Herein, by dispersing Li1.3Al0.3Ti1.7(PO4)3 (LATP) into poly(vinylidene fluoride)-hexafluoropropylene (PVDF-HFP) and poly(ethylene oxide) (PEO) matrix, the PVDF-HFP/PEO/LATP (PHP-L) solid-state electrolyte with high ionic conductivity (1.40 × 10-3 S cm-1), high tensile strength and flexibility is designed, achieving brilliant compatibility with silicon nanosheets. The chemical interactions between PVDF-HFP and PEO, LATP increase amorphous degree of polymer, accelerating Li+ transfer. Good flexibility of the PHP-L contributes to adaptive structure variation of electrolyte with silicon expansion/shrinkage, ensuring swift interfacial ions transfer. Moreover, the solid membrane with high tensile limits electrode structural degradation and eliminates continuous interfacial growth to form stable 2D solid electrolyte interface (SEI) film, achieving superior cyclic performance to liquid electrolytes. The Si//PHP-L15//LiFePO4 solid-state full-cell exhibits stable lithium storage with 81% capacity retention after 100 cycles. This work demonstrates the effectiveness of composite solid electrolyte in addressing fundamental interfacial and performance challenges of silicon 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
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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