电化学催化剂CoPc对Ni-MH电池浮充性能的影响  

Effect of Cobalt Phthalocyanine on Floating-Charge Performance of Nickel/Metal Hydride Battery

作　　者：王芳[1] 吴锋[1] 陈实[1] 王国庆[1] 

机构地区：[1]北京理工大学化工与环境学院

出　　处：《中国稀土学报》2004年第5期609-613,共5页Journal of the Chinese Society of Rare Earths

基　　金：国家重点基础研究发展计划资助(2002CB211800);国家基础研究重大项目前期研究专项资助(2001CCA05000)

摘　　要：针对Ni MH电池充电过程中氧的产生和不恰当的消除方式带来的内压升高和热量聚积使电池总体性能衰减很快的问题,提出采用降低化学催化氧还原的比例,而提高热量产生少的电催化氧还原比例的方法加以解决。研究了电化学催化剂CoPc(酞菁钴)对Ni MH电池浮充性能的影响。实验结果表明采用合适的方式添加CoPc的电池具有较好的浮充性能。其中在电解液中添加CoPc的电池具有最好的充电效率和循环能力;2000次浮充以后其内压升高速度也最低。In Ni-MH battery, oxygen evolution causes a high inner pressure during charge and overdischarge, and an inappropriate eliminating of oxygen in the battery results in accumulation of heat. This is the main obstacle to develop and apply high capability and high power battery. How to reduce the ratio of the chemical catalysis rate to the electric catalysis rate in Ni-MH battery is considered as an urgent problem. In this paper, effect of cobalt phthalocyanine (CoPc) on the floating-charge performance of Ni-MH batteries were examined. Experimental results show that the battery with appropriate adding of CoPc additive display a better capability of floating charge and discharge than the one without CoPc. The battery with CoPc adding into electrolyte show the best charging efficiency and cycleability and the slowest increasing of inner pressure after 2000th charge and discharge.

关 键 词：Ni—MH电池 电化学催化剂 酞菁钴 浮充 内压 稀土 

分 类 号：O646[理学—物理化学]