Affiliation:
1. Tianjin University of Technology
Abstract
Graphite is the widely used material as anode materials for Li-ion cells with a low theoretical capacity of 372 mAhg-1. Silicon has a high theoretical capacity of 4212 mAhg-1, but has a low intrinsic conductivity and its lower cycling life makes it unpractical. In this paper, silicon/artificial graphite composite was prepared by mechanical alloying to improve the cycle property of Si. On one hand, a new kind of alloy SiC was composited and composed as a coacervate, and the particle sizes of the silicon was reduced settled by mechanical alloying but the size of the new material become larger and larger with the proportion of artificial graphite increasing. On the other hand, the new material exhibits a better electrochemical performance, with the rate of its cyclic discharge capacity decreasing slowly.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science
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