ISSN 1000-6818CN 11-1892/O6CODEN WHXUEU
Acta Phys Chim Sin >> 2018,Vol.34>> Issue(2)>> 213-218     doi: 10.3866/PKU.WHXB201707172         中文摘要
An Sodium Bis (trifluoromethanesulfonyl) imide-based Polymer Electrolyte for Solid-State Sodium Batteries
MA Qiang1,2, HU Yongsheng1, LI Hong1, CHEN Liquan1, HUANG Xuejie1, ZHOU Zhibin2
1 Institute of Physics, Chinese Academy of Sciences, Beijing 100190, P. R. China;
2 School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
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A solid polymer electrolyte (SPE), composed of sodium bis(trifluoromethanesulfonyl)imide (NaTFSI) and poly(ethylene oxide) (PEO), is prepared by a simple solution-casting method. The physicochemical and electrochemical properties of the NaTFSI/PEO ([EO]/[Na+]=15) SPE in terms of its phase transitions, crystallization, thermal stability, ionic conductivity, and anodic electrochemical stability are systematically investigated. We demonstrate that the NaTFSI/PEO SPE has a relatively high ionic conductivity (σ ≈ 10-3 S·cm-1) at 80℃, excellent electrochemical stability (4.86 V vs. Na+/Na), and thermal stability up to 350℃. More importantly, the NaTFSI-based SPE delivers not only excellent chemical and electrochemical stability with sodium metal, but also good cycling and rate performances in an Na|SPE|NaCu1/9Ni2/9Fe1/3Mn1/3O2 cell.

Keywords: Sodium bis (trifluoromethanesulfonyl) imide   Solid polymer electrolyte   Poly (ethylene oxide)   Sodium battery  
Received: 2017-06-06 Accepted: 2017-07-09 Publication Date (Web): 2017-07-17
Corresponding Authors: HU Yongsheng, ZHOU Zhibin Email:;

Fund: The project was supported by the National Key Technologies R&D Program,China (2016YFB0901504),the National Natural Science Foundation of China (51421002,51472268,51172083).

Cite this article: MA Qiang, HU Yongsheng, LI Hong, CHEN Liquan, HUANG Xuejie, ZHOU Zhibin. An Sodium Bis (trifluoromethanesulfonyl) imide-based Polymer Electrolyte for Solid-State Sodium Batteries[J]. Acta Phys. -Chim. Sin., 2018,34 (2): 213-218.    doi: 10.3866/PKU.WHXB201707172

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