电沉积制备Ni-Sn合金电极材料的结构与电化学性能

The characteristics and catalytic ability for hydrogen evolution reaction of Ni-Sn alloys prepared by electroplating

研究了电沉积法制备Ni-Sn合金的工艺条件对材料的结构与电化学性能的影响。研究发现,镀液成分和沉积电流密度对Ni-Sn合金电化学性能有重要影响。同时发现,所制备的Ni-Sn合金的形貌结构与其电化学性能之间存在密切关系。经过200h耐用性试验,所制备的Ni-Sn合金电极的形貌结构与电化学性能未发生变化。

The relation between catalytic ability for hydrogen evolution reaction and characteristics of nickel-tin alloys prepared by electroplating was investigated. The catalytic ability was found to strongly depend on preparation conditions. Hydrogen overvoltage was drastically decreased with an increase of the width at half height of X-ray diffraction peaks which was related to the tin content. The niekel-arsenide-type structure and the initial high catalytic ability remained unchanged after an 200 hours durability test, suggesting that the addition of the specific amount of tin, which itself had high overvohage, enhanced the catalytic ability of nickel.