Encapsulating MWNTs into Hollow Porous Carbon Nanotubes: A Tube-in-Tube Carbon Nanostructure for High-Performance Lithium-Sulfur Batteries

被引：384
作者：
Zhao, Yi [1 ,3 ]
Wu, Wangliang [1 ]
Li, Jiaxin [1 ]
Xu, Zhichuan [3 ,4 ]
Guan, Lunhui [1 ,2 ]
机构：
[1] Chinese Acad Sci, Fujian Inst Res Struct Matter, State Key Lab Struct Chem, Fuzhou 350002, Peoples R China
[2] Chinese Acad Sci, Key Lab Design & Assembly Funct Nanostruct, Fuzhou 350002, Fujian, Peoples R China
[3] Nanyang Technol Univ, Sch Mat Sci & Engn, Singapore 639798, Singapore
[4] Nanyang Technol Univ, Energy Res Inst NTU, Singapore 639798, Singapore
来源：
ADVANCED MATERIALS | 2014年 / 26卷 / 30期
基金：
中国国家自然科学基金; 新加坡国家研究基金会;
关键词：
LI-S BATTERIES; CATHODE MATERIAL; GRAPHENE; COMPOSITE; STABILITY; PROSPECTS; CAPACITY; STORAGE;
D O I：
10.1002/adma.201401191
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A tube-in-tube carbon nanostructure (TTCN) with multi-walled carbon nanotubes (MWNTs) confined within hollow porous carbon nanotubes is synthesized for Li-S batteries. The structure is designed to enhance the electrical conductivity, hamper the dissolution of lithium polysulfide, and provide large pore volume for sulfur impregnation. As a cathode material for Li-S batteries, the S-TTCN composite with 71 wt% sulfur content delivers high reversible capacity, good cycling performance as well as excellent rate capabilities. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
引用
收藏
页码：5113 / 5118
页数：6
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