Preparation and Characterization of Spherical Carbon Composite for Use as Anode Material for Lithium Ion Batteries

A novel spherical carbon composite material, in which nanosized disordered carbons are dispersed in a soft carbon matrix, has been prepared and investigated for use as a potential anode material for lithium ion batteries. Disordered carbons were synthesized by ball milling natural graphite in air. T...

Full description

Saved in:
Bibliographic Details
Published inBulletin of the Korean Chemical Society Vol. 31; no. 5; pp. 1331 - 1335
Main Authors Ahn, Byoung-Hoon, Lee, Sung-Man
Format Journal Article
LanguageKorean
Published 2010
Subjects
Anode material
Lithium-ion battery
Electrochemical performance
Carbon composite
Online AccessGet full text

Cover

More Information
Summary:A novel spherical carbon composite material, in which nanosized disordered carbons are dispersed in a soft carbon matrix, has been prepared and investigated for use as a potential anode material for lithium ion batteries. Disordered carbons were synthesized by ball milling natural graphite in air. The composite was prepared by mixing the ball-milled graphite with petroleum pitch powder, pelletizing the mixture, and pyrolyzing the pellets at $1200^{\circ}C$ in an argon flow. The ballmilled graphite consists of distorted nanocrystallites and amorphous phases. In the composite particle, nanosized flakes are uniformly distributed in a soft carbon matrix, as revealed by X-ray diffractometer (XRD) and transmission electron microscopy (TEM) experiments. The composite is compatible with a pure propylene carbonate (PC) electrolyte and shows high rate capability and excellent cycling performance. The electrochemical properties are comparable to those of hard carbon.
Bibliography:KISTI1.1003/JNL.JAKO201014752579272
ISSN:0253-2964
1229-5949