材料科学与工程学报2012，Vol.30Issue(2)：245-250,279,7.
纳米CuO/Cu负极材料的热氧化制备及其结构和电化学性能
Thermal Oxidation Synthesis of CuO/Cu Anode Materials and the Structure and Electrochemical Properties
摘要
Abstract
Nano-Cu powder is used as the starting material to synthesize CuO/Cu composite with minor Cu as an anode material for lithium ion battery.X-ray diffractometry（XRD）,scanning electron microscopy（SEM） and transmission electron microscopy（TEM） are used to analyze the structure of the CuO/Cu composites prepared by different oxidation temperatures,ranging from 250 to 500℃.Galvanostatic charge-discharge is used to test the electrochemical properties of the anodes.The results show that most of the Cu powder have been oxidized to CuO under the oxidation temperature of 250 to 500℃ for 4 hours and the content of CuO is higher than 94 wt.%.The nano-morphology of the raw Cu powder is preserved.Minor Cu remains in the products prepared by oxidation temperatures of 250 to 450℃,whereas no Cu is detected by XRD for the oxidation temperature of 500℃.The nano-CuO/Cu composite prepared by the thermal oxidation method shows favorable cycle stability as an anode material for lithium ion battery.The product prepared at 450℃ displays the best cycle stability.A capacity of 425mAh/g has been reached after an activation of 8 cycles,and the capacity retention almost reaches 90 % after 80 cycles.The capacity after 80 cycles maintains as 377mAh/g.关键词
锂离子电池/负极材料/CuO/热氧化/电化学性能Key words
lithium ion battery/anode/CuO/thermal oxidation/electrochemical properties分类
信息技术与安全科学引用本文复制引用
冯冉,高明霞,王朋,唐渊波,刘永锋,潘洪革..纳米CuO/Cu负极材料的热氧化制备及其结构和电化学性能[J].材料科学与工程学报,2012,30(2):245-250,279,7.基金项目
浙江省自然科学基金资助项目 （）
浙江省科技计划资助项目 （）
