将 MWNTs 封装到中空多孔碳纳米管中：一种用于高性能锂硫电池的管中管碳纳米结构。

Encapsulating MWNTs into hollow porous carbon nanotubes: a tube-in-tube carbon nanostructure for high-performance lithium-sulfur batteries.

机构信息

State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, YangQiao West Road 155#, Fuzhou, 350002, P.R. China; School of Materials Science and Engineering, Nanyang Technological University, Singapore, 639798.

出版信息

Adv Mater. 2014 Aug 13;26(30):5113-8. doi: 10.1002/adma.201401191. Epub 2014 Jun 4.

DOI:10.1002/adma.201401191

PMID:24897930

Abstract

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.

摘要

一种管中管碳纳米结构（TTCN），其中多壁碳纳米管（MWNTs）被限制在中空多孔碳纳米管内，被合成用于 Li-S 电池。该结构旨在提高电导率、阻止锂多硫化物的溶解，并为硫浸渍提供大的孔体积。作为 Li-S 电池的阴极材料，具有 71wt%硫含量的 S-TTCN 复合材料具有高可逆容量、良好的循环性能以及优异的倍率性能。