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Hollow TiN Nanospheres as Advanced Host Materials for High Performance Lithium‐Sulfur Batteries
Author(s) -
Luo Jie,
Zheng Jianming,
Dang Bo
Publication year - 2019
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201904053
Subject(s) - polysulfide , tin , materials science , mesoporous material , lithium (medication) , electrochemistry , sulfur , conductivity , nanotechnology , chemical engineering , electrode , metallurgy , chemistry , electrolyte , organic chemistry , catalysis , endocrinology , medicine , engineering
To improve the electrochemical performance of lithium‐sulfur batteries, the issues of poor electronic conductivity and shuttle effect of soluble polysulfide must be solved. In this work, hollow mesoporous TiN nanospheres are developed and designed as host materials for the lithium‐sulfur batteries. The as‐prepared TiN/S composites show initial high specific capacity of 1316 mAh g −1 at the current density of 0.1 C. Furthermore, the TiN/S composites deliver superior cycle stability and excellent rate capability. The superior electrochemical performance could be ascribed to the following advantages: (a) The presence of TiN could enhance the electronic conductivity; (b) The mesoporous structure is beneficial for inhibiting the shuttle effect of soluble polysulfide.