摘要
为了获得具有良好电化学性能的AB5型贮氢合金,以提高N i-MH电池的市场竞争力,对AB5型贮氢合金M lN i3.55A l0.3Mn0.3Co0.24Cu0.2Fe0.05S i0.1Cr0.15Zn0.1B0.01进行镀镍处理,并对镀镍前后合金的电化学性能进行了测试。结果表明,经过镀镍处理后,合金的的活化性能、放电容量和循环稳定性都得到改善,达到最大放电容量所需的循环周期由10个减为6个,最大放电容量由235mA.h/g升到265mA.h/g,经190个循环周期,容量衰减由23%降到13%。
In order to get AB5 type hydrogen storage alloy with good electrochemical properties and increase the market competition of Ni-MH battery, nickel plating is used as surface treatment for AB5 type hydrogen storage alloy MlNi3.35,Al0.3,Mn0.3Co0.24Cu0.2Fe0.05Si0.1Cr0.15Zn0.1B0.01, and the electrochemical properties before and after nickel plating are tested. The results show that after nickel plating, the activation, discharge capacity and cycle stability of AB5 type hydrogen storage alloy are improved. The cycle period decreases from 10 to 6 before reaching the maximum discharge capacity. The maximum discharge capacity increases from 235mA·h/ g to 265mA·h/g, and the capacity attenuation rate decreases from 23% to 13% after 190 cycle periods.
出处
《表面技术》
EI
CAS
CSCD
2006年第3期23-24,共2页
Surface Technology
关键词
贮氢合金
镀镍
活化性能
放电容量
循环稳定性
Hydrogen storage alloy
Nickel plating
Activation
Discharge capacity
Cycle stability
