Enhanced Electrochemical Kinetics and Polysulfide Traps of Indium Nitride for Highly Stable Lithium-Sulfur Batteries

被引：269

作者：

Zhang, Linlin ^{[1
]}

Chen, Xiang ^{[2
]}

Wan, Fang ^{[1
]}

Niu, Zhiqiang ^{[1
]}

Wang, Yijing ^{[1
]}

Zhang, Qiang ^{[2
]}

Chen, Jun ^{[1
]}

机构：

[1] Nankai Univ, Coll Chem, Key Lab Adv Energy Mat Chem, Minist Educ, Tianjin 300071, Peoples R China

[2] Tsinghua Univ, Dept Chem Engn, Beijing Key Lab Green Chem React Engn & Technol, Beijing 100084, Peoples R China

来源：

ACS NANO | 2018年 / 12卷 / 09期

基金：

中国国家自然科学基金;

关键词：

lithium-sulfur batteries; indium nitride host; catalytic conversion; rapid polysulfide redox reaction; highly stable cycle life; LI-S BATTERIES; METAL-ORGANIC FRAMEWORK; GRAPHENE OXIDE; HIGH-CAPACITY; CARBON NANOSPHERES; MODIFIED SEPARATOR; CYCLING STABILITY; PERFORMANCE; CATHODE; NANOTUBES;

D O I：

10.1021/acsnano.8b05466

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Lithium-sulfur (Li-S) batteries are strongly considered as promising energy storage devices due to their high capacity and large theoretical energy density. However, the shuttle of polysulfides and their sluggish kinetic conversion in electrochemical processes seriously reduce the utilization of active sulfur, leading to a rapid capacity fading. Herein we introduced indium nitride (InN) nanowires into Li-S batteries through separator modification. Both the indium cation and electron-rich nitrogen atom of InN served as the polysulfide traps through strong chemical affinity. Meanwhile, the rapid electron transfer on the surface of InN accelerated the conversion of polysulfides in a working battery. The bifunction of InN nanowires effectively suppressed the shuttle effect. Therefore, Li-S batteries with InN-modified separators exhibit excellent rate performance and high stable cycling life with only 0.015% capacity decay per cycle after 1000 cycles, which affords fresh insights into the energy chemistry of high-stable Li-S batteries.

引用

页码：9578 / 9586

页数：9

共 70 条

[1] Modified Separator Performing Dual Physical/Chemical Roles to Inhibit Polysulfide Shuttle Resulting in Ultrastable Li-S Batteries [J].