Effects of carbon sources on electrochemical performance ofLi₄Ti₅O₁₂/C composite anode materials

来源期刊：中南大学学报(英文版)2010年第6期

论文作者：刘萍 李劼 张治安 赖延清

文章页码：1207 - 1210

Key words：lithium-ion battery; anode material; Li₄Ti₅O₁₂; carbon; electrochemical performance

Abstract: Li₄Ti₅O₁₂/C composite materials were synthesized by two-step solid state reaction method with glucose, sucrose, and starch as carbon sources, respectively. The effects of carbon sources on the structure, morphology, and electrochemical performance of Li₄Ti₅O₁₂/C composite materials were investigated by SEM, XRD and electrochemical tests. The results indicate that carbon sources have almost no effect on the structure of Li₄Ti₅O₁₂/C composite materials. The initial discharge capacities of the Li₄Ti₅O₁₂/C composite materials are slightly lower than those of as-synthesized Li₄Ti₅O₁₂. However, Li₄Ti₅O₁₂/C composite materials show better electrochemical rate performance than the as-synthesized Li₄Ti₅O₁₂. The capacity retention (79%) of the Li₄Ti₅O₁₂/C composite materials with starch as carbon source, is higher than that of Li₄Ti₅O₁₂/C composite materials with glucose and sucrose as carbon source at current rate of 2.0C.

基金信息：the National Key Technology Research and Development Program of China