双(三氟甲基磺酰)亚胺钠基聚合物电解质在固态钠电池中的性能

引用本文: 马强, 胡勇胜, 李泓, 陈立泉, 黄学杰, 周志彬. 双(三氟甲基磺酰)亚胺钠基聚合物电解质在固态钠电池中的性能[J]. 物理化学学报, 2018, 34(2): 213-218. doi: 10.3866/PKU.WHXB201707172 shu

Citation: 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 Physico-Chimica Sinica, 2018, 34(2): 213-218. doi: 10.3866/PKU.WHXB201707172 shu

双(三氟甲基磺酰)亚胺钠基聚合物电解质在固态钠电池中的性能

马强 ^1,2, ,
胡勇胜 ^1, ,
李泓 ^1, ,
陈立泉 ^1, ,
黄学杰 ^1, ,
周志彬 ^2,

1.
中国科学院物理研究所, 北京 100190;
2.
华中科技大学化学与化工学院, 武汉 430074
基金项目:
国家重点研发计划（2016YFB0901504）及国家自然科学基金（51421002、51472268和51172083）资助项目

摘要: 采用简单的溶液浇铸法制备出由双（三氟甲基磺酰）亚胺钠（NaTFSI）/聚氧乙烯（PEO）构筑的固态聚合物电解质（SPE），并针对其相转变、结晶性、热稳定性、电导率以及电化学稳定性等基础理化及电化学性质进行了系统表征。结果表明，NaTFSI/PEO （[EO]/[Na⁺]=15） SPE具有相对高的电导率（σ ≈ 10^-3 S·cm^-1，80℃）、高的耐氧化能力（4.86 V vs Na⁺/Na）和热稳定性高达350℃。电池测试结果表明，该NaTFSI基SPE不仅对金属钠电极能够呈现出优异的界面稳定性，而且在Na|SPE|NaCu_1/9Ni_2/9Fe_1/3Mn_1/3O₂电池中展现出良好的循环和倍率性能。

关键词:

English

An Sodium Bis (trifluoromethanesulfonyl) imide-based Polymer Electrolyte for Solid-State Sodium Batteries

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
Received Date: 06 June 2017
Revised Date: 09 July 2017
Fund Project:
The project was supported by the National Key Technologies R&D Program,China (2016YFB0901504),the National Natural Science Foundation of China (51421002,51472268,51172083).

Abstract: 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|NaCu_1/9Ni_2/9Fe_1/3Mn_1/3O₂ cell.

Key words:

Sodium bis (trifluoromethanesulfonyl) imide
/ Solid polymer electrolyte
/ Poly (ethylene oxide)
/ Sodium battery

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双(三氟甲基磺酰)亚胺钠基聚合物电解质在固态钠电池中的性能

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

双(三氟甲基磺酰)亚胺钠基聚合物电解质在固态钠电池中的性能

English

An Sodium Bis (trifluoromethanesulfonyl) imide-based Polymer Electrolyte for Solid-State Sodium Batteries

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

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