摘要
用直流磁控溅射法制备不同厚度的膜电极材料。在室温,1mol/L KOH溶液中,这些膜电极材料析氢反应的过电位和膜电极的厚度有关:在一定厚度范围内,膜电极越厚,析氢过电位越小,不同膜电极材料都表现出这样的规律,只是大小和对厚度的依赖程度有所不同。这些结果表明析氢反应不只是发生在电极表面的范围内,反应过程中形成的金属氢化物由于深入到材料内部,从而出现了厚度对析氢反应过电位的影响,并且由于材料不同,可形成的金属氢化物厚度不同,所以对过电位的影响也就不同。
The different thickness of HER film electrodes prepared by DC magnetron sputtering device, their overpotential attained at room temperature, 1 mol/L KOH is related with thickness of the film, the overpotential decreases with increasing of the thickness, although the decreasing degree of different material is varying. All these show that the HER reaction is not happened only on the surface of electrode, the M-H is formed inside the film electrode, and it is related with the characteristic of M-H, so thickness of the film affects the overpotential.
出处
《人工晶体学报》
EI
CAS
CSCD
北大核心
2007年第1期62-65,共4页
Journal of Synthetic Crystals
关键词
析氢电极材料
厚度
过电位
HER film electrodes
thickness
overpotential
