A new Na[(FSO2)(n-C4F9SO2)N]-based polymer electrolyte for solid-state sodium batteries. Issue 17 (11th April 2017)

• Record Type: Journal Article
• Authors: Ma, Qiang; Liu, Juanjuan; Qi, Xingguo; Rong, Xiaohui; Shao, Yuanjun; Feng, Wenfang; Nie, Jin; Hu, Yong-Sheng; Li, Hong; Huang, Xuejie; Chen, Liquan; Zhou, Zhibin
• Is Part Of: Journal of materials chemistry. Volume 5:Issue 17(2017)
• Page Start: 7738
• Page End: 7743
• Publication Date: 2017-04-11
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c7ta01820g
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : The NaFNFSI-based SPE can deliver the excellent interfacial stability with Na metal and good cycling performances for the Na|SPE|NaCu1/9 Ni2/9 Fe1/3 Mn1/3 O2 cell. Abstract : To improve the safety of sodium (Na) batteries, we first report a new solid polymer electrolyte (SPE), composed of sodium (fluorosulfonyl)( n -nonafluorobutanesulfonyl)imide (Na[(FSO2 )( n -C4 F9 SO2 )N], NaFNFSI) and poly(ethylene oxide) (PEO), which is prepared by a facile solution-casting method. The NaFNFSI/PEO (EO/Na + = 15) blended polymer electrolyte exhibits a relatively high ionic conductivity of 3.36 × 10 −4 S cm −1 at 80 °C, sufficient thermal stability (>300 °C) and anodic electrochemical stability (≈4.87 V vs. Na + /Na) for application in solid-state Na batteries. Most importantly, the NaFNFSI-based SPE can not only deliver excellent chemical and electrochemical stability with Na metal, but can also display good cycling and current-rate performances for the Na|SPE|NaCu1/9 Ni2/9 Fe1/3 Mn1/3 O2 cell. All of these outstanding properties would make the NaFNFSI-based SPE promising as a candidate for application in solid-state Na batteries.