掺钇球形Ni(OH)_2的合成及高温性能研究  

Synthesis and high-temperature charge/discharge performanceof the Y^(3+)-doped spherical Ni(OH)_2

作　　者：米欣[1] 姜长印[2] 耿鸣明[3] 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,北京100084 [3]天津和平海湾电源集团有限公司,天津300384

出　　处：《电池》2004年第1期13-15,共3页Battery Bimonthly

基　　金：国家自然科学基金重点项目(50134020);国家重点基础研究发展规划项目(2002CB211800)

摘　　要：通过络合沉淀的方法制得了含钇的球形Ni(OH) 2 ,研究了掺杂Y3 + 后的球形Ni(OH) 2 在不同温度下的充放电性能。试验结果表明 :常温下含钇的球形Ni(OH) 2 的放电比容量比普通球形Ni(OH) 2 稍低 ,但随着温度的升高 ,它的放电比容量要比普通球形Ni(OH) 2 高很多 ,一般在 2 5%以上。掺杂钇提高了球形Ni(OH) 2The Y^(3+)-doped spherical Ni(OH)_2 active material was synthesized using chemical coordination precipitations. The specific capacity of the Y^(3+)-doped spherical Ni(OH)_2 was measured at different temperatures. The specific capacity of the Y^(3+)-doped spherical Ni(OH)_2 was slightly lower than that of the common spherical Ni(OH)_2 at room temperature. However,the measured specific capacity of Y^(3+)-doped Ni(OH)_2 was much higher than that of the common spherical Ni(OH)_2 at higher temperature. Doped spherical Ni(OH)_2 with Y^(3+) improved the high-temperature performance of spherical Ni(OH)_2.

关 键 词：MH/NI电池 正极材料 电极 掺钇 球形NI(OH)2 合成 高温性能 碱性蓄电池 

分 类 号：TM912.2[电气工程—电力电子与电力传动]