Single Lithium‐Ion Conducting Polymer Electrolytes Based on a Super‐Delocalized Polyanion

作者：Qiang Ma, Heng Zhang, Chongwang Zhou, Liping Zheng, Pengfei Cheng, Jin Nie, Wenfang Feng, Yong‐Sheng Hu, Hong Li, Xuejie Huang, Liquan Chen, Michel Armand, Zhibin Zhou · 发表于：Angewandte Chemie International Edition · 年份：2016 · DOI：10.1002/anie.201509299 · 被引用次数：479 · 研究领域：Advanced Battery Materials and Technologies、Advancements in Battery Materials、Conducting polymers and applications

A novel single lithium-ion (Li-ion) conducting polymer electrolyte is presented that is composed of the lithium salt of a polyanion, poly[(4-styrenesulfonyl)(trifluoromethyl(S-trifluoromethylsulfonylimino)sulfonyl)imide] (PSsTFSI(-)), and high-molecular-weight poly(ethylene oxide) (PEO). The neat LiPSsTFSI ionomer displays a low glass-transition temperature (44.3 °C; that is, strongly plasticizing effect). The complex of LiPSsTFSI/PEO exhibits a high Li-ion transference number (tLi (+) =0.91) and is thermally stable up to 300 °C. Meanwhile, it exhibits a Li-ion conductivity as high as 1.35×10(-4) S cm(-1) at 90 °C, which is comparable to that for the classic ambipolar LiTFSI/PEO SPEs at the same temperature. These outstanding properties of the LiPSsTFSI/PEO blended polymer electrolyte would make it promising as solid polymer electrolytes for Li batteries.