Details

Autor(en) / Beteiligte

• 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

Titel

A new Na[(FSO2)(n-C4F9SO2)N]-based polymer electrolyte for solid-state sodium batteriesElectronic supplementary information (ESI) available. See DOI: 10.1039/c7ta01820g

Erscheinungsjahr

2017-05

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• 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[(FSO 2 )( n -C 4 F 9 SO 2 )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|NaCu 1/9 Ni 2/9 Fe 1/3 Mn 1/3 O 2 cell. All of these outstanding properties would make the NaFNFSI-based SPE promising as a candidate for application in solid-state Na batteries. The NaFNFSI-based SPE can deliver the excellent interfacial stability with Na metal and good cycling performances for the Na|SPE|NaCu 1/9 Ni 2/9 Fe 1/3 Mn 1/3 O 2 cell.