摘要
以硝酸银、硫酸镍和水合肼为原料,以钛为基体,采用水热法首先合成了钛基银电极(Ag/Ti),再以此电极为基体,采用水热法合成了银基镍电极(Ni/Ag/Ti)。SEM图像表明,金属镍以纳米球状形式沉积于银表面。利用循环伏安(CV)和恒电位阶跃(CA)等电化学方法,研究了在Ni/Ag/Ti电极和Ni/Ti电极上,乙醇在1MNaOH溶液中的电化学氧化行为。结果表明,Ni/Ag/Ti电极对乙醇的电化学氧化表现出更高的电流密度(87mA/cm^-2)。
A novel silver particle-supported nickel electrode (NiAg/Ti) was fabricated by a hydrothermal processe with hydrazine as the reduction agent. The structure of NiAg/Ti was characterized by SEM. Oxidation of ethanol on the Ni/Ag/Ti electrode and Ni/Ti in 1M NaOH solution was studied with cyclic voltammograms(CV) and chronoamperometry (CA). Compared with the Ni/Ti electrode, The results show that Ni/Ag/Ti electrode was electrochemically active towards ethanol oxidation, peak current density was 87 mA/cm^-2.
出处
《中国材料科技与设备》
2009年第3期42-46,共5页
Chinese Materials Science Technology & Equipment
基金
国家自然科学基金资助项目(20876038)
湖南省教育厅重点资助项目(07A019)
国家留学基金委归国人员科研启动基金资助项目([2007]1108)
关键词
电催化
乙醇氧化
镍催化剂
银
Electrocatalysis
Ethanol oxidation
Nickel catalyst
Silver