Composition and modification designs of PVDF-based polymer solid-state electrolytes
Solid-state lithium batteries have attracted much attention due to their high energy density and improved safety property.As the most critical component of SSLBs,the solid-state electrolyte(SSE)has a crucial role in the improvement of the electrochemical performance of SSLBs.Poly vinylidene fluoride(PVDF)solid polymer electrolytes(SPEs),which have excellent flexibility,mechanical properties,and processing characteristics,show great potential in developing lithium solid-state batteries.However,PVDF-based SPEs still face problems such as low ionic conductivity and high crystallinity.In this paper,based on the ion transport mechanism and the current drawbacks of SPEs,the recent advances in the design strategies of PVDF-based SPEs,such as organic molecule modification and the design and modification of fillers,are reviewed in detail.In addition,this paper describes the application of PVDF-based SPEs in lithium solid-state battery systems.Finally,this review proposes future strategies for the development of PVDF-based high performance SPEs.
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