摘要
在LaMgNi3.7Co0.3储氢合金粉末表面进行化学镀镍处理。镀覆镍的合金粉末与镍粉混合后涂于泡沫镍上制成电极。当镀液中Ni2+为40 g/L、温度为50°C、镀液pH为8.0、反应时间为30 min时,合金电极在6 mol/L KOH电解液中的最大放电容量和循环稳定性都有显著提高,合金电极的交换电流密度增大,极化电阻降低,其动力学性能增强。
Electroless nickel plating was carried out on the surface of LaMgNi3.7Co0.3 hydrogen storage alloy powder. The mixture of the nickel-coated alloy powder and nickel powder was coated on nickel foam to prepare an electrode. Under the conditions of Ni2＋ 40 g/L, temperature 50 ℃, pH 8.0, and time 30 min, the maximum discharge capacity and cyclic stability of the alloy electrode are greatly improved in an electrolyte containing 6 mol/L KOH. Moreover, the exchange current density is increased, the polarization resistance decreased, and the kinetic performance improved.
出处
《电镀与涂饰》
CAS
CSCD
北大核心
2012年第3期8-11,共4页
Electroplating & Finishing
关键词
镧-镁-镍-钴合金
储氢
化学镀镍
电化学
lanthanum-magnesium-nickel-cobalt alloy
hydrogen storage
electroless nickel plating
electrochemistry
