%0 Journal Article
%T Electrochemical Impedance Spectroscopy of Layer Lithium Cobalt Nickel Manganese Oxide<br>层状锂钴镍锰氧化物交流阻抗谱的研究
%A CHEN Yu-Hong
%A TANG Zhi-Yuan
%A HE Yan-Bing
%A <br>陈玉红
%A 唐致远
%A 贺艳兵
%J 无机材料学报
%D 2007
%I Science Press
%X Electrochemical impedance spectroscopy (EIS) was applied to study the reaction kinetics of layer lithium cobalt nickel manganese oxide material. Effects of the battery structure, charge depth and temperature on the layer lithium cobalt nickel manganese oxide cathode electrodes were tested by EIS. The results show that the inductance appears in the 18650 winding cells while not in 2032 cells. The whole process consists of overcoming strcture force period of oxygen layers crystal lattice in the rang of 2.0--2.7V, lithium-ion membranes forming period in the range of 2.7--3.65V and interface electrical double layer forming period in the range of 3.65--4.25V.The charge transfer rate and Li-ion diffuse rate are improved with temperature increasing. The charge transfer and lithium ion diffusion activation energies are 20.48kJ/mol and 48.67kJ/mol respectively, so the lithium ion diffusion process is the control process of the whole electrochemical reaction.
%K lithium-ion batteries
%K cathode materials
%K lithium cobalt nickel manganese oxide electrochemical impedance spectroscopy<br>锂离子电池
%K 正极材料
%K 锂钴镍锰氧化物
%K 交流阻抗
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=ABC0063016AF57E1C73EF43C8D2212BD&aid=A48041EBBBD2B8F5&yid=A732AF04DDA03BB3&vid=BC12EA701C895178&iid=38B194292C032A66&sid=D98387EFB283C5E0&eid=BD7D27247C63490C&journal_id=1000-324X&journal_name=无机材料学报&referenced_num=0&reference_num=15