丁二腈
电解质
离子电导率
材料科学
聚合物
电化学
电导率
化学工程
离子键合
锂(药物)
无机化学
离子
电极
化学
复合材料
有机化学
物理化学
医学
工程类
内分泌学
作者
Zelin Liu,Shu Zhang,Qian Zhou,Yidong Zhang,Dong Liang,Yang-Huan Shen,Xiangnan Fu,Xinyi Wang,Shiyu Luo,Yun Zheng,Peng Yu,Jingchao Chai,Zhihong Liu,Guanglei Cui
标识
DOI:10.1002/bte2.20220049
摘要
Abstract Quasi solid‐state composite polymer electrolytes have generated much interest due to their high ionic conductivity and stable interfacial compatibility with electrodes. However, they suffer from the balance of liquid plasticizer content and ionic conductivity to retard potential safety issues. In this paper, a polyvinylene carbonate (PVCA)‐based quasi solid‐state composite polymer electrolyte for ambient‐temperature lithium‐ion battery is proposed, wherein succinonitrile (SN) serves as the multifunctional component to increase the ionic conductivity. The study indicates that SN can plasticize the polymer electrolyte, coordinate with lithium‐ion, and modulate the molecular weight of the polymer. The fabricated PVCA–SN polymer electrolyte delivers an ionic conductivity up to 4.5 × 10 –4 S/cm at 25°C. The assembled lithium‐ion battery based on PVCA electrolyte demonstrates an excellent rate performance and high‐capacity retention at ambient temperature. The proposition of PVCA‐based quasi solid‐state composite polymer electrolyte provides a resultful strategy for high‐performance rechargeable lithium batteries.
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