Effects of pH value of reaction solution on structure and electrochemical performance of calcium-containing activematerial of secondary zinc electrodes^①

来源期刊：中国有色金属学报(英文版)2004年第2期

论文作者：陈华 王建明 郑奕 张鉴清 曹楚南

文章页码：406 - 411

Key words：calcium zincate; zinc oxide; zinc electrode; electrochemical performance

Abstract: The calcium-containing active material of secondary alkaline zinc electrodes was prepared by a chemical coprecipitation method and characterized by scanning electron microscopy(SEM) and X-ray diffractometry(XRD). Their electrochemical performance was tested by the Galvanstatic charge-discharge method. The experimental results show that the sample synthesized at pH=11.15 has a typical calcium zincate crystal. The zinc electrode using this sample as active material shows higher discharge capacity, more negative discharge plateau potential and longer cycle lifetime.