石油化工高等学校学报2011，Vol.24Issue(1)：18-20,3.DOI:10.3696/j.issn.1006-396X.2011.01.004
锂离子电池正极材料LiNi0.8Co0.2O2的合成及性能研究
The Synthesis and Properties of LiNi0.8Co0.2O2 Cathode Material for Lithium-Ion Batteries
摘要
Abstract
LiNi0.8Co0.2O2 cathode material for lithium-ion batteries was prepared from sol-gel method using nitrates and starch as the starting materials. The synthesized material was characterized by means of X-ray diffraction (XRD), scanning electron microscope (SEM) and galvanostatic charge/discharge cycling. The XRD data of the product show that the synthesized material are single phases and all the peaks are indexable to the layered a-NaFeO2 structure. The synthesized LiNi0.8Co0.2O2 presents a narrow distribution of small particles and exhibits a good electrochemical property with initial discharge specific capacity of 183.1 mAh/g and the discharge specific capacity of 171.3 mAh/g after 50 cycles in the voltage range 2.75～4.50V (versus Li+/Li) at a constant current density of 0.2 mA/cm2.关键词
锂离子电池/正极材料/溶胶-凝胶方法分类
化学化工引用本文复制引用
杨占旭,乔庆东..锂离子电池正极材料LiNi0.8Co0.2O2的合成及性能研究[J].石油化工高等学校学报,2011,24(1):18-20,3.基金项目
辽宁省自然科学基金项目(20082187). （20082187）
