Performance of "Polymer-in-Salt" Electrolyte PAN-LiTFSI Enhanced by Graphene Oxide Filler

被引：58

作者：

Wu, Bo ^{[1
]}

Wang, Liping ^{[1
]}

Li, Zhiling ^{[1
]}

Zhao, Mingjuan ^{[1
]}

Chen, Kaihao ^{[1
]}

Liu, Sihong ^{[1
]}

Pu, Yunqiang ^{[1
]}

Li, Jingze ^{[1
,2
]}

机构：

[1] Univ Elect Sci & Technol China, State Key Lab Elect Thin Films & Integrated Devic, Chengdu 610054, Peoples R China

[2] Sichuan Univ, State Key Lab Polymer Mat Engn, Chengdu 610065, Peoples R China

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2016年 / 163卷 / 10期

基金：

美国国家科学基金会;

关键词：

LITHIUM BATTERIES; IONIC-CONDUCTIVITY; HIGH-VOLTAGE; ACRYLATE COPOLYMERS; SECONDARY BATTERIES; BUTYL ACRYLATE; TRANSPORT; PARTICLES; MECHANISM; MEMBRANES;

D O I：

10.1149/2.0531610jes

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Exploring solid state electrolytes with high ionic conductivity and good electrochemical stability is of prime importance for the development of safe batteries. In this study, we prepare a high-performance "polymer-in-salt" solid polymer electrolyte (SPE) by using polyacrylonitrile (PAN) as a host polymer, bistrifluoromethanesulfonimide lithium salt (LiTFSI) as an electrolyte salt, and different loading graphene oxide (GO) as a nano-filler. PAN-LiTFSI electrolyte filled with 0.9 wt% GO nanosheet exhibits an ionic conductivity of 1.1 x 10(-4) S cm(-1) at 30 degrees C, which is almost one order of magnitude higher than that of the filler-free one. In addition, the anodic potential and the lithium ion transference number also increase to 5 V and 0.4, respectively. The enhancement on ionic conductivity is attributed to a 3D fast ion transport network constructed by GO nanosheets and a further decoupling of ion transport from segmental dynamics. (C) 2016 The Electrochemical Society. All rights reserved.

引用

页码：A2248 / A2252

页数：5

共 46 条

[1] RUBBERY SOLID ELECTROLYTES WITH DOMINANT CATIONIC TRANSPORT AND HIGH AMBIENT CONDUCTIVITY [J].