摘要
用低热固相反应法制备铝钴复合掺杂的N i(OH)2样品,研究其结构和电化学性能。XRD测试结果表明,同时掺杂摩尔分数为20%的A l和摩尔分数为5%的Co的-αN i(OH)2样品在6 mol/L KOH中浸泡6个月仍保持稳定的α型结构;该样品经30次充放电循环仍保持α型结构。电化学测试结果表明,该样品的放电比容量和大电流放电性能均明显好于摩尔分数为20%的A l的单掺杂-αN i(OH)2和球形-βN i(OH)2。
Al and Co co-doped α-Ni (OH)2 sample was prepared by a solid state reaction at a relatively low temperature. Its structure and electrochemical behaviors were investigated. The results of X-ray diffraction (XRD) show that Al and Co co-doped α-Ni ( OH ) 2 maintains the structure of α-Ni ( OH ) 2 in 6 mol/L KOH solution for 6 months and keeps the structure of α-Ni ( OH ) 2 after 30 cycles of charge/discharge. The results of the electrochemical experiments show that Al and Co co-doped α-Ni ( OH ) 2 exhibits a larger discharge capacity and a higher discharge potential and a high current density property than Al doped α-Ni(OH) 2 and spherical β-Ni(OU)2.
出处
《应用化学》
CAS
CSCD
北大核心
2006年第12期1309-1312,共4页
Chinese Journal of Applied Chemistry
基金
国家自然科学基金(20573057)资助项目
国家"211"工程重点学科建设项目
南京师范大学预研基金(2005103XYY1809)资助项目
关键词
低热固相反应
氢氧化镍
电化学性能
复合掺杂
solid state reaction, Ni ( OH ) 2, electrochemical behaviors, co-substituted
作者简介
通讯联系人:周益明,男,教授;E-mail:zhou810@263.net;研究方向:固相合成化学及化学电源