Lithium Superionic Sulfide Cathode for All-Solid Lithium-Sulfur Batteries

被引：348

作者：

Lin, Zhan ^{[1
]}

Liu, Zengcai ^{[2
]}

Dudney, Nancy J. ^{[1
]}

Liang, Chengdu ^{[2
]}

机构：

[1] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA

[2] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA

来源：

ACS NANO | 2013年 / 7卷 / 03期

关键词：

batteries; lithium; sulfur; Ionic conductivity; cathode; PERFORMANCE; COMPOSITES; ELECTRODE; CHALLENGES; NANOTUBES;

D O I：

10.1021/nn400391h

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

This work presents a facile synthesis approach for core shell structured Li2S nanoparticles with Li2S as the core and Li3PS4 as the shell. This material functions as lithium superionic sulfide (LSS) cathode for long-lasting, energy-efficient lithium sulfur (Li-S) batteries. The LSS has an ionic conductivity of 10(-7) S cm(-1) at 25 degrees C, which is 6 orders of magnitude higher than that of bulk Li2S (similar to 10(-13)S cm(-1)). The high lithium-ion conductivity of LSS imparts an excellent cycling performance to all-solid Li-S batteries, which also promises safe cycling of high-energy batteries with metallic lithium anodes.

引用

页码：2829 / 2833

页数：5

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