【作者】 米欣； 李宇展； 魏进平； 高学平； 阎杰；

【Author】 Mi Xin, Li yuzhan, Wei Jingping, Gao Xueping, Yan Jie (Institute of New Energy Material Chemistry, Nankai University, Tianjin 300071, China)

【机构】 南开大学新能源材料化学研究所；

【摘要】 本文用化学共沉淀的方法合成了内掺1%钇的球型Ni(OH)2并对它的高温性能进行了深入的研究。研究发现,在高温下内掺1%钇的球型Ni(OH)2的放电比容量比普通球型Ni(OH)2要高出很多,具有明显优良的高温性能。本文还通过循环伏安法和粉末微电极技术对其机理进行了研究,研究发现元素钇可以提高镍电极上的氧气析出过电位。更多还原

【Abstract】 Ni(OH)2 doped with 1% yttrium was synthesized by means of chemistry co-precipitation and the high temperature performances of it was studied in this paper. It is found that the specific capacities of the spherical Ni(OH)2 doped with 1% yttrium are much higher than those of the regular at higher temperatures. Mechanism of yttrium improving high temperature performances of Ni(OH)2 electrode is also discussed in detail through CVs and microelectrode. It is found that the oxygen overpotential on Ni(OH)2 electrode doped with 1% yttrium is increased.更多还原