球型Ni(OH)_2表面包覆Y(OH)_3及其高温充放电性能  

The Preparation and the High-temperature Properties of the Spherical Ni(OH)_2 Coated with Y(OH)_3

作　　者：米欣[1] 姜长印[2] 阎杰[1] 高学平[1] 万春荣[2] 

机构地区：[1]南开大学新能源材料化学研究所,天津300071 [2]清华大学核能研究院,北京102201

出　　处：《无机化学学报》2004年第2期164-168,共5页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金重点项目(No.50134020);国家重点基础研究发展规划项目(No.2002CB211800)资助。

摘　　要：应用共沉淀的方法在球型Ni穴OH雪2的表面包覆了一层Y穴OH雪3,并研究了包覆不同含钇量后的球型Ni穴OH雪2的高温充放电性能。研究结果表明:包覆Y穴OH雪3的球型Ni穴OH雪2具有良好的高温充放电性能。其中1C充放电条件下,包覆量为0.3%的Ni穴OH雪2较好,0.2C充放电条件下,包覆量为1%的Ni穴OH雪2较好。Institute of Nuclear Energy Technology,Tsinghua University,Beijing1000 84)abstract: Spherical Ni(OH)abstract: 2 coated with Y(OH)abstract: 3 was prepared,and the effects of the crystal structures of yttrium com-poun ds to the high-temperature properties of the spherical Ni(OH)abstract: 2 was studied.The results show that the specific capacities of the spherical Ni(OH)abstract: 2 coated with Y(OH)abstract: 3 are higher than that of the regular at high temperatures.At0.2C charge/ discharge rate the specific capacity of Ni(OH)abstract: 2 coated with1%Y(OH)abstract: 3 is60%higher than that of the regular.At1C charge/discharge rate the sp ecific capacity of Ni(OH)_2 coated with1%Y(OH)_3 is10%higher than that of the regular.

关 键 词：球型Ni(OH)2 表面包覆 Y(OH)3 充放电性能 镍氢电池 

分 类 号：TM912[电气工程—电力电子与电力传动]