Effects of erbium additions on high temperature performance of high power Ni-MH batteries

摘要：

The Co(Ⅲ)-coated spherical nickel hydroxide powder is optimum as positive electrode of high power Ni-MH battery because of its excellent property.But the performances at high temperature (above 50 ℃) is still not satisfied.In the present paper,the effect of element erbium,used as additive by different methods to prepare positive electrode,on the high temperature performances of the Ni-MH batteries is studied.It is found that the charge acceptance ability of the spherical Ni(OH)2 electrode with element erbium as additive is improved.The discharge capacities of Ni(OH)2 coated with 1％ (atomic fraction) Er(OH)3 and mechanically added with 1％ (atomic fraction) Er2O3 at 1C are 12.6％ and 11.7％,respectively,higher than those of the samples without erbium at 70 ℃.

关键词： Ni-MH battery nickel hydroxide electrode Er-coating high temperature performance

作者: XIE Shou-yun CHENG Yan JIAN Xu-yu ZHU Lei CHEN Hui WANG Zhong

作者单位: Energy Materials and Technology Research Institute,General Research Institute for Nonferrous Metals,Beijing 100088,China

会议类型: 国际会议

会议名称: 2007年国际有色金属大会(International Conference of Nonfereous Materials 2007)(ICNFM)

会议地点: 长沙

会议语种:英文

在线出版日期: 2007-11-28（万方平台首次上网日期，不代表论文的发表时间）