电池2011，Vol.41Issue(4)：196-198,3.
CITT分析Li+在固态LiNi1/3Co1/3M n1/3O2扩散系数
Analyzing diffusion coefficient of Li + in solid state LiNi1/3CO1/3Mn1/3O2 by CITT
摘要
Abstract
Powder LiNi1/3Co1/3 Mn1/3O2 cathode materials were synthesized via carbonate coprecipitation method. The results of component analysis,powder XRD.SEM and galvanostatic charge-discharge tests showed that the products was pure-crystal laminar single spherical structure LiNi1/3Co1/3 Mn1/3O2. When cycled in 2.5 ~ 4.5 V with the current of 0.1 C (0.2 mA) under room temperature,the specific discharge capacity of initial and the 25th cycle was 241.37 mAh/g and 211.3 mAh/g, respectively. The diffusion coefficient of Li+ ( Du) in solid state LiNi1/3Co1/3Mni/3O2 in different cycle number and potential was analyzed by capacity intermittent titration technique(CITT) .The results showed that the Du was 10"" ~ 10"13 cmVs.the diffusion performance enhanced with the increasing of cycle number,the Du was minimum at about 3.7 V and remained stable in 3.7~4.3 V.关键词
碳酸盐共沉淀/扩散系数/容量间歇滴定技术(CITT)/循环性能Key words
carbonate coprecipitation/ diffusion coefficient/ capacity intermittent titration technique ( CITT)/ cycle performance分类
信息技术与安全科学引用本文复制引用
王盈来,肖亮,巍嘉,张擎宇..CITT分析Li+在固态LiNi1/3Co1/3M n1/3O2扩散系数[J].电池,2011,41(4):196-198,3.基金项目
武汉理工大学研究生自由创新基金(2010-ZY-LX-012) （2010-ZY-LX-012）
