含铅的多元氢阴极电催化性能的研究  

Lead Containing Composite Cathode for Electro Catalytic Hydrogon Evolution

作　　者：吕瑶姣[1] 张季爽[2] 李青莲[2] 侯让坤[3] 言喜云 

机构地区：[1]湖南大学环境工程系 [2]湖南大学化学化工系 [3]河南省教育学院

出　　处：《湖南大学学报（自然科学版）》1993年第6期46-50,共5页Journal of Hunan University:Natural Sciences

基　　金：国家自然科学基金资助课题.

摘　　要：用电沉积法制备Mo-W-Ni-Pb-Ca多元活性阴极,研究了在0.5mol/L H_2SO_4中的析氢反应.结果表明,多元阴极具有较高的电催化活性,其析氢过电位比普通软钢阴极降低305mV,i_0提高三个数量级,且有较好的稳定性.并用光电子能谱研究了表面组成和结构.证实表面有:Ni, NiO, MoO_2, MoO^(2-)_4, WO_3, PbO_2, PbO, Ca++等物质.The Ni—Mo—W—Pb composite electrodes were obtained by electrode-posited. The hydrogen evolution reaction on these electrodes was performed in 0.5mol/L H_2SO_4 medium. These results showed higher electrocatalytic activity of the electrodes for hydrogen evolution reaction. The hydrogen overvoltage decreased 305mV and the exchange current density increased three orders of magnitudes comparing with steel electrode. Electrolytic experiments by high current density (300mA/cm^2) showed that these electrodes had steady catalytic activity of hydrogen evolution reaction. ESCA analysis showed that the components of electrodes surface were : Ni, NiO, MoO_2, WO_3, PbO, PbO_2 ,Ca,etc.

关 键 词：电沉积 电催化 析氢反应 多元电极 

分 类 号：O646.54[理学—物理化学]