铂钯钌铑的氢过电位比较研究  

Comparative Studies on the Hydrogen Overpotentials of Platinum Palladium Ruthenium and Rhodium

作　　者：陈景 潘诚 崔宁 

机构地区：[1]贵金属研究所,昆明650221

出　　处：《贵金属》1992年第1期14-18,共5页Precious Metals

摘　　要：测定了局部镀有Pt、Pd、Ru和Rh等铂族金属的铜片电极在盐酸介质中放氢反应的电极电位,获得该4种铂族金属氢过电位大小顺序为Rh<Pt<Ru<Pd。用测定放氢量作了验证,推导出铑在4mol/L HCl中,50℃及i=1mA/cm^2时的氢过电位为0.116V。The electrode potentials of hydrogen evolution by copper clectrode partially electroplated by platinum, palladium, ruthenium and rhodium are measured in hydrochloric acid media. The order of the values of hydrogen overpotentials for platinum group metals has been obtained to be Rh<Pt<Ru <Pd. It is confirmed by the measurement of thc volume of hydrogen evolution. The hydrogen overpotential of rhodium is calculated to be 0.116 V in 4 mol/L HC1 at 50℃ and i = 1 mA/cm^2.

关 键 词：氢过电位 铑 铂 钌 钯 

分 类 号：TG113.224[金属学及工艺—物理冶金]