无机材料学报2012，Vol.27Issue(12)：1251-1255,5.DOI:10.3724/SP.J.1077.2012.12246
Li4Ti4.95Al0.05O12/C复合负极材料的制备及电性能研究
Preparation and Electrochemical Performance of Li4Ti4.95Al0.05O12/C Anode Materials
摘要
Abstract
Li4Ti5O12 is a promising anode electrode material in Lithium ion batteries. Using polyacrylamide as template and carbon source, spinel Li4T4.95Al0.05O12 and Li4Ti4.95Al0.05O12/C were successfully synthesized by modified solid state method. The results of X-ray diffraction (XRD) and Field-emission scanning electron microscopy show that highly crystalline Li4Ti4.95Al0.05O12 and Li4Ti4.95Al0.05O12/C materials without any impurity are obtained. The shape and size of particles are modified by polyacrylamide. The electrochemical performances of materials are investigated in the range of 1.0-2.5 V. The Li4Ti4.95Al0.05O12/C presents a higher specific capacity and better cycling stability than Li4Ti4.95Al0.05O12. The charge and discharge specific capacity of Li4Ti4.95Al0.04O12/C material are 159.2 and 160.8 mAh/g at 0.2C rate.关键词
Li4Ti5O12/掺杂/电性能/交流阻抗Key words
Li4Ti5O12/ doping/ electrochemical performance/ AC impedance分类
化学化工引用本文复制引用
董红玉,张治军,尹艳红,杨书廷..Li4Ti4.95Al0.05O12/C复合负极材料的制备及电性能研究[J].无机材料学报,2012,27(12):1251-1255,5.基金项目
国家自然科学基金(21001041) （21001041）
