Carbon Nanofibers Decorated with Molybdenum Disulfide Nanosheets: Synergistic Lithium Storage and Enhanced Electrochemical Performance

Traditional lithium‐ion batteries that are based on layered Li intercalation electrode materials are limited by the intrinsically low theoretical capacities of both electrodes and cannot meet the increasing demand for energy. A facile route for the synthesis of a new type of composite nanofibers, na...

Full description

Saved in:
Bibliographic Details
Published in:Angewandte Chemie International Edition 2014-10, Vol.53 (43), p.11552-11556
Main Authors: Zhou, Fei, Xin, Sen, Liang, Hai-Wei, Song, Lu-Ting, Yu, Shu-Hong
Format: Article
Language:English
Subjects:
Batteries
Carbon fibers
carbon nanofibers
Cycles
Decoration
Electrochemical analysis
electrochemistry
Lithium
Lithium batteries
lithium-ion battery
Molybdenum
Molybdenum disulfide
Nanofibers
Nanostructure
nanostructures
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:Traditional lithium‐ion batteries that are based on layered Li intercalation electrode materials are limited by the intrinsically low theoretical capacities of both electrodes and cannot meet the increasing demand for energy. A facile route for the synthesis of a new type of composite nanofibers, namely carbon nanofibers decorated with molybdenum disulfide sheets (CNFs@MoS2), is now reported. A synergistic effect was observed for the two‐component anode, triggering new electrochemical processes for lithium storage, with a persistent oxidation from Mo (or MoS2) to MoS3 in the repeated charge processes, leading to an ascending capacity upon cycling. The composite exhibits unprecedented electrochemical behavior with high specific capacity, good cycling stability, and superior high‐rate capability, suggesting its potential application in high‐energy lithium‐ion batteries. Carbon nanofibers (CNFs) decorated with molybdenum disulfide sheets are fabricated by a facile hydrothermal process with low‐cost, biomass‐derived carbonaceous nanofibers as the supports. On reacting with lithium, the nanofibers undergo novel electrochemical processes that are triggered by a synergistic lithium storage effect, leading to enhanced cycling and rate performance of the lithium‐ion battery.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201407103