A new composite solid electrolyte PEO/Li10GeP2S12/SN for all-solid-state lithium battery

被引：204

作者：

Chen, Bo ^{[1
,2
]}

Huang, Zhen ^{[1
]}

Chen, Xiaotian ^{[1
]}

Zhao, Yanran ^{[1
]}

Xu, Qiang ^{[2
]}

Long, Peng ^{[1
,2
]}

Chen, Shaojie ^{[1
]}

Xu, Xiaoxiong ^{[1
]}

机构：

[1] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Zhejiang, Peoples R China

[2] Tianjin Univ, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2016年 / 210卷

基金：

中国国家自然科学基金;

关键词：

solid polymer electrolyte; LithGeP(2)S(12); succinonitrile; activation process; all-solid-state lithium battery; POLYMER ELECTROLYTE; ELECTROCHEMICAL PERFORMANCE; ANODE; SUCCINONITRILE; POLYETHYLENE; STABILITY; SILICON; CONDUCTIVITY; ENHANCEMENT; ADDITIVES;

D O I：

10.1016/j.electacta.2016.06.025

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

070208 [无线电物理];

摘要：

A new solid polymer electrolyte (SPE) PEO-LiTFSI-1%LGPS-10%SN is successfully prepared via a convenient method with low cost. The effect of SN on the ionic conductivity of PEO-based electrolyte is systematically investigated. It presents a maximum conductivity of 9.10 x 10(-5) S.cm(-1) at 25 degrees C, and a 15-fold ion conductivity enhancement in PEO-LiTFSI. It exhibits wide electrochemical window (0-5.5 V) and excellent compatibility with metallic Li. The LiFePO4/Li batteries exhibit a good cycling and rate performance under 40 degrees C, whose maximum discharge specific capacity at 0.1 C is 160.6 mAh.g(-1), and 94.7% can be retained after 60 cycles. At 0.5C, the maximum discharge specific capacity is 138.4 mAh.g(-1), and capacity retention close to 90% even after 100 cycles. The reasons of activation process are discussed. This new SPE with outstanding electrochemical performance is a promising solid electrolyte candidate for applications in all-solid-state lithium battery. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：905 / 914

页数：10

共 56 条

[1]

Plastic crystal-lithium batteries: An effective ambient temperature all-solid-state power source [J].