Porous nitrogen-doped carbon/MnO coaxial nanotubes as an efficient sulfur host for lithium sulfur batteries

被引：43

作者：

Lin, Chao ^{[1
]}

Qu, Longbing ^{[2
]}

Li, Jiantao ^{[1
]}

Cai, Zhengyang ^{[1
]}

Liu, Haoyun ^{[1
]}

He, Pan ^{[1
]}

Xu, Xu ^{[1
]}

Mai, Liqiang ^{[1
]}

机构：

[1] Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Luoshi Rd 122, Wuhan 430070, Hubei, Peoples R China

[2] Univ Melbourne, Dept Mech Engn, Melbourne, Vic 3010, Australia

来源：

NANO RESEARCH | 2019年 / 12卷 / 01期

基金：

中国国家自然科学基金;

关键词：

nitrogen doping; porous; MnO; carbon nanotubes; sulfur batteries; HIGH-PERFORMANCE; POLYSULFIDE MEDIATOR; GRAPHENE; COMPOSITE; CATHODE; NANOSHEETS; NANOCAGES;

D O I：

10.1007/s12274-018-2203-9

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

As a promising candidate for next generation energy storage devices, lithium sulfur (Li-S) batteries still confront rapid capacity degradation and low rate capability. Herein, we report a well-architected porous nitrogen-doped carbon/MnO coaxial nanotubes (MnO@PNC) as an efficient sulfur host material. The host shows excellent electron conductivity, sufficient ion transport channels and strong adsorption capability for the polysulfides, resulting from the abundant nitrogen-doped sites and pores as well as MnO in the carbon shell of MnO@PNC. The MnO@PNC-S composite electrode with a sulfur content of 75 wt.% deliveries a specific capacity of 802 mAhg(-1) at a high rate of 5.0 C and outstanding cycling stability with a capacity retention of 82% after 520 cycles at 1.0 C.

引用

页码：205 / 210

页数：6

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