摘要
采用气体收集实验、阴极极化曲线法及电化学阻抗法,研究了铅和铋电极在硫酸溶液中的析氢反应。相同电位下,铋电极上收集的氢气体积大于铅电极上的。铋电极上的析氢Tafel斜率为0 11V,小于铅电极上的0 14V;在-1 5V时,铋电极上的析氢反应电阻为0 553Ω·cm2,小于铅电极上的198Ω·cm2。铋在铅酸电池负极中游离析出时,将加速电池的析氢反应。
<Abstrcat>Hydrogen evolution reactions on lead (Pb) and bismuth (Bi) electrodes were studied by the measurement of hydrogen evolution volume, cathodic polarization curves and alternative current impedance spectrum.The Tafel slope of hydrogen evolution (reaction) on Bi electrode was 0.11 V, lower than that on Pb electrode (0.14 V).The resistance of hydrogen evolution reaction on Bi electrode at -1.5 V was 0.553 Ω·cm^2, smaller than that on Pb electrode (198 Ω·cm^2). Bi could improve the hydrogen evolution in lead acid batteries when it existed in negative plates in the form of pure metal.
出处
《电池》
CAS
CSCD
北大核心
2005年第3期216-218,共3页
Battery Bimonthly
基金
广东省自然科学基金资助项目(031533)
广东省重点教师资助项目(Q02088)
关键词
铅
铋
铅酸电池
析氢反应
lead
bismuth
lead acid battery
hydrogen evolution reaction
