Single Lithium‐Ion Conducting Polymer Electrolytes Based on a Super‐Delocalized Polyanion,Angewandte Chemie International Edition

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Single Lithium‐Ion Conducting Polymer Electrolytes Based on a Super‐Delocalized Polyanion
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2016-01-14 , DOI: 10.1002/anie.201509299
Qiang Ma ₁ , Heng Zhang ₁ , Chongwang Zhou ₁ , Liping Zheng ₁ , Pengfei Cheng ₁ , Jin Nie ₁ , Wenfang Feng ₁ , Yong-Sheng Hu ₂ , Hong Li ₂ , Xuejie Huang ₂ , Liquan Chen ₂ , Michel Armand ₃ , Zhibin Zhou ₁

Affiliation

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 (t_Li⁺=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.

中文翻译：

基于超离域聚阴离子的单一锂离子导电聚合物电解质

一种新的单锂离子（Li离子）传导性高分子电解质，提出的是由聚阴离子的锂盐，聚[（4- styrenesulfonyl）（三氟甲基（S-trifluoromethylsulfonylimino）磺酰基）亚胺]（PSsTFSI的^-），和高分子量聚环氧乙烷（PEO）。纯净的LiPSsTFSI离聚物显示出较低的玻璃化转变温度（44.3°C；即强塑化效果）。LiPSsTFSI / PEO的复合物具有很高的锂离子转移数（t _Li⁺ = 0.91），在300°C的温度下具有热稳定性。同时，它的锂离子电导率高达1.35×10 ^-4 S cm ^-1在90°C的温度下，与在相同温度下的经典双极性LiTFSI / PEO SPE相当。LiPSsTFSI / PEO混合聚合物电解质的这些出色性能使其有望用作锂电池的固体聚合物电解质。

更新日期：2016-01-14

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