Free-standing porous carbon nanofibers-sulfur composite for flexible Li-S battery cathode

Flexible and free-standing sulphur/(PCNFs-CNT) composite (S@PCNFs-CNT) electrode was successfully prepared by infiltrating sulfur into microporous carbon nanofibers-carbon nanotube (PCNFs-CNT) composite. When used as a cathode material for Li-S batteries, the S@PCNFs-CNT exhibits much better cycle p...

Full description

Saved in:
Bibliographic Details
Published in:Nanoscale 2014-08, Vol.6 (16), p.9579-9587
Main Authors: Zeng, Linchao, Pan, Fusen, Li, Weihan, Jiang, Yu, Zhong, Xiongwu, Yu, Yan
Format: Article
Language:English
Subjects:
Carbon
Cathodes
Electrodes
Lithium sulfur batteries
Nanostructure
Sulfur
Sulphur
Three dimensional
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Flexible and free-standing sulphur/(PCNFs-CNT) composite (S@PCNFs-CNT) electrode was successfully prepared by infiltrating sulfur into microporous carbon nanofibers-carbon nanotube (PCNFs-CNT) composite. When used as a cathode material for Li-S batteries, the S@PCNFs-CNT exhibits much better cycle performance and rate performance compared to CNT-free S@PCNFs. It delivers a reversible capacity of 637 mA h g(-1) after 100 cycles at 50 mA g(-1) and a rate capability of 437 mA h g(-1) at 1 A g(-1). The improved electrochemical performance is attributed to synergistic effect of the 3D interconnected structure, the additive of CNT, and the uniform distribution of micropores (
ISSN:2040-3364
2040-3372
DOI:10.1039/c4nr02498b