二次Li／LiNi_（0．3）Co_（0．7）O_2电池反应研究  

Studies on the Charge and Discharge Reaction of Li/LiNi_(0.3)Co_(0.7)O_2 Battery

作　　者：章福平[1] 

机构地区：[1]浙江丝绸工学院纤维分院

出　　处：《电化学》1996年第3期305-309,共5页Journal of Electrochemistry

摘　　要：利用循环伏安，库仑滴定，Ｘ射线衍射，恒电流阶跃等方法研究了Ｌｉ／ＬｉＮｉ_（０．３）Ｃｏ_（０．７）Ｏ_２电池反应．结果表明该电池在４．３０～３．００Ｖ间放电容量可达１２０～１４０ｍＡ·ｈ·ｇ￣（－１），充、放电机理为Ｌｉ＋在ＬｉＮｉ_（０．３）Ｃｏ_（０．７）Ｏ_２中进行两步脱嵌与嵌入反应．并计算了８℃和４０℃时两步脱嵌反应的焓和熵及自由能变化．同时，讨论了Ｌｉ＋在ＬｉＮｉ_（０．３）Ｃｏ_（０．７）Ｏ_２中的化学扩散系数和电导随其含量变化的规律。The charge and discharge reaction of Li/LiNi0.3Co0.7O2 battery have been studied by using CV,CT,XRD and GCP.It is shown that the discharge capacity of the cell reaches 120-140 mA·h·g(-1) in the 4.30-3.00 V in 1 mol/L LiClO4/PC electrolyte system. The discharge mechanism involve a two-step Li+ intercalation reaction. The thermodynamic data such as △G,△S,△H,of the reaction are given. Furthermore,the changes of the Dor σi of Li+ with its composition have been discussed.

关 键 词：锂电池 锂镍钴氧化物 嵌入反应 

分 类 号：TM911[电气工程—电力电子与电力传动]