摘要
用电沉积的方法制备了Co Ni W合金电极。用稳态极化曲线法和交流阻抗技术研究了其在 7mol·L- 1 NaOH溶液中的析氢电催化活性。结果表明 :在碱性条件下 ,Co Ni W合金电极比Ni Co ,Ni W合金电极具有更低的析氢过电位 ,其析氢的表观活化能为 44 .2kJ·mol- 1 ,具有较高的析氢催化活性 ,是一种有工业应用前景的的析氢电催化活性电极。
Co-Ni-W alloy electrode was prepared by electrodeposition. Electrocatalytic behaviors of hydrogen evolution reaction on the obtained electrode were studied in 7 mol·L -1 NaOH solution by steady-state polarization and AC impedance techniques. The results show that Co-Ni-W alloy electrode has more excellent eletrocatalytic activity than that of Ni-Co or Ni-W alloy electrode. Its free energy of activation is 44.2 kJ·mol -1. The electrode also show good stability during long-term continuous electrolysis.
出处
《稀有金属》
EI
CAS
CSCD
北大核心
2004年第5期954-957,共4页
Chinese Journal of Rare Metals
基金
国家级"火炬"计划项目 ( 93 2 42 15 0 0 7)
关键词
电沉积
Co—Ni—W
催化活性
析氢
electrodeposition
Co-Ni-W
electrocatalytic
hydrogen evolution
