Synthesis of Lithium-cobalt Oxides by Sol-gel Method and their Cathodical Discharge Behavior at 500℃
来源期刊：中南大学学报(英文版)2000年第2期
论文作者：LI Zhu-you HUANG Bai-yun ZHU Yong-li LIU Zhi-jian QU Xuan-hui
文章页码：57 - 60
Key words：sol-gel; LiCoO2; thermal battery; cathode
Abstract: Three kinds of lithium-cobalt oxides with lithium to cobalt atomic ratios of 0.6, 0.8 and 1.0 respectively were prepared using nitrates and citric acid by sol-gel process. During the baking of the dry-gel powder, two exothermic peaks occur, followed by the formation of Li2O and Co3O4 and then the combination of LiCoO2, which is testified by DTA and XRD. The powder formed from an alkaline sol is finer than that from the acidic one. There are a single phase intercalation of lithium ion and an electrochemical reduction reaction for higher-valence cobalt ion when simulating the discharging process of Li-B/LiCl-KCl/lithium cobalt oxides at 500℃, and the voltage and specific capacity are not sensitive to the initial ratios of lithium to cobalt.
