Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1292087 | Journal of Power Sources | 2006 | 5 Pages |
Abstract
A carbon-coated Si–Cu3Si composite material is prepared using silicon and copper(II) d-gluconate powders by simple mechanical milling and pyrolysis, and is investigated as an anode material for lithium-ion batteries. In this process, the Cu3Si and pyrolyzed carbon uniformly adhere to the surface of the silicon particles. The cycling performance of the composite material exhibits a stable capacity of 850 mAh g−1 for 30 cycles. The improved cycling performance is attributed to the fact that the copper silicide and pyrolyzed carbon provide both a better electrical contact with the current–collector and a buffering effect for the volume expansion–contraction during cycling.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Sukeun Yoon, Sung-Il Lee, Hansu Kim, Hun-Joon Sohn,