Single Lithium‐Ion Conducting Polymer Electrolytes Based on a Super‐Delocalized Polyanion |
| |
| Authors: | Qiang Ma Heng Zhang Chongwang Zhou Liping Zheng Pengfei Cheng Prof Jin Nie Prof Wenfang Feng Prof Yong‐Sheng Hu Prof Hong Li Prof Xuejie Huang Prof Liquan Chen Prof Michel Armand Prof Zhibin Zhou |
| |
| Affiliation: | 1. Key Laboratory for Large-Format Battery Materials and System, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, China;2. Key Laboratory for Renewable Energy, Beijing Key Laboratory for New Energy Materials and Devices, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, China;3. CIC energigune, Alava Technology Park, Albert Einstein, MI?ANO álava, Spain |
| |
| Abstract: | 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. |
| |
| Keywords: | blended polymer electrolytes ion conductors lithium batteries Li-ion conductivity |
|
|
