A novel solid PEO/LLTO-nanowires polymer composite electrolyte for solid-state lithium-ion battery

被引：175
作者：
Zhu, Lin [1 ]
Zhu, Penghui [1 ]
Fang, Qunxiang [1 ]
Jing, Maoxiang [1 ]
Shen, Xiangqian [1 ]
Yang, Lezhi [2 ]
机构：
[1] Jiangsu Univ, Sch Mat Sci & Engn, 301 Xuefu Rd, Zhenjiang 212013, Peoples R China
[2] Changsha Res Inst Min & Met Co Ltd, 966 South Lushan Rd, Changsha 410012, Hunan, Peoples R China
来源：
ELECTROCHIMICA ACTA | 2018年 / 292卷
关键词：
Poly(ethylene oxide) (PEO); LLTO nanowires; Solid polymer composite electrolyte; Solid-state lithium-ion battery; TRANSPORT-PROPERTIES; RECHARGEABLE BATTERIES; POLYETHYLENE OXIDE; CONDUCTIVITY; PEO; NANOCOMPOSITES; NANOPARTICLES; ENHANCEMENT; FILLERS;
D O I：
10.1016/j.electacta.2018.10.005
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
In this study, fast ionic conductor Li0.33La0.557TiO3 (LLTO) nanowires with high ionic conductivity were prepared through electrospinning and subsequent high temperature calcination. It was filled in the poly(ethylene oxide) (PEO) matrix as a filler and the novel solid PEO/LiTESI/LLTO-nanowires polymer composite electrolytes were prepared via solution casting method with low cost. The results showed that the addition of LLTO nanowires could effectively improve the ionic conductivity, electrochemical stability window, transference number, and compatibility with lithium metal of polymer composite electrolytes. The maximum ionic conductivities of composite electrolytes filled with 5 wt% LLTO nanowires at room temperature and 60 degrees C were 5.53 x 10(-5) S cm(-1) and 3.63 x 10(-4) S cm(-1), respectively. Its electrochemical stability window was up to 4.75 V. The LiFePO4/Li solid-state lithium-ion battery assembled with the novel polymer composite electrolytes had good cycling stability. At current rate of 0.5 C, the discharge specific capacity remained about 123 mAh g(-1) after 100 cycles at 60 degrees C. (C) 2018 Elsevier Ltd. All rights reserved.
引用
收藏
页码：718 / 726
页数：9
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