Abstract
Current developments of lithium-ion batteries (LIBs) are mainly focused on improving security and cycle performance. Herein, a novel polyvinylidene fluoride (PVDF)/triphenyl phosphate (TPP)/cellulose acetate (CA) nanofiber membrane was fabricated by one-step electrospinning and used as separator in lithium-ion batteries. Compared to traditional polyethylene membrane, the obtained composite showed higher porosity, elevated thermal stability, superior electrolyte wettability, and improved flame resistance. In addition, batteries assembled with PVDF/TPP/CA membrane exhibited excellent electrochemical properties and cycle stability. The enhanced performances were attributed to the porous structure and presence of CA and TPP. Overall, the proposed hybrid organic cellulose-based composite polymer membranes look promising as separators for advanced LIBs.
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