PEO/garnet composite electrolytes for solid-state lithium batteries: From "ceramic-in-polymer" to "polymer-in-ceramic"

被引：1224

作者：

Chen, Long ^{[1
]}

Li, Yutao ^{[2
,3
]}

Li, Shuai-Peng ^{[1
]}

Fan, Li-Zhen ^{[1
,2
,3
]}

Nan, Ce-Wen ^{[4
]}

Goodenough, John B. ^{[2
,3
]}

机构：

[1] Univ Sci & Technol Beijing, Beijing Adv Innovat Ctr Mat Genome Engn, Inst Adv Mat & Technol, Beijing 100083, Peoples R China

[2] Univ Texas Austin, Mat Sci & Engn Program, Austin, TX 78712 USA

[3] Univ Texas Austin, Texas Mat Inst, Austin, TX 78712 USA

[4] Tsinghua Univ, Sch Mat Sci & Engn, Beijing 100084, Peoples R China

来源：

NANO ENERGY | 2018年 / 46卷

基金：

北京市自然科学基金;

关键词：

Composite solid electrolytes; Solid-state Lithium batteries; Polyethylene oxide; Garnet; Flexible membrane; ION-CONDUCTING MEMBRANE; NANOPARTICLES; LI7LA3ZR2O12; ENHANCEMENT; TRANSPORT;

D O I：

10.1016/j.nanoen.2017.12.037

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

Composite polyethylene-oxide/garnet electrolytes containing LiTFSI as the lithium salt have a Li+ conductivity sigma(Li) > 10(-4) S cm(-1) at 55 degrees C and a low plating/stripping impedance of a dendrite-free Li-metal anode; they have been developed for a safe solid-state Li-metal rechargeable battery. Composites consisting of "ceramic-in-polymer" to "polymer-in-ceramic" that are flexible and mechanically robust are fabricated by hot-pressing. Safe pouch cells with a remarkable flexibility have been fabricated. Solid-state LiFePO4 vertical bar Li batteries with electrolytes of "ceramic-in-polymer" and "polymer-in-ceramic" deliver excellent cycling stability with high discharge capacities (139.1 mAh g(-1) with capacity retention of 93.6% after 100 cycles) and high capacity retention (103.6% with coulombic efficiency of 100% after 50 cycles) at 0.2 C and 55 degrees C. Both kinds of electrolytes can be applied to solid-state lithium batteries.

引用

页码：176 / 184

页数：9

共 40 条

[1]

A lithium-ion sulfur battery using a polymer, polysulfide-added membrane [J].