摘要
目前,关于Ni-Fe-Co合金电极电催化析氢性能的报道较少。以不同工艺参数在Q235钢表面电沉积Ni-Fe-Co镀层,通过SEM、EDS和XRD等分析手段研究了镀层的微观形貌、成分及物相组成,并利用极化曲线探究了工艺条件对镀层电催化析氢活性的影响。结果表明:在电流密度45 m A/cm^2,温度60℃,pH值3.8的条件下得到的镀层具有最好的电催化析氢性能;最优镀层表面组织致密,由简单立方结构的Fe Ni3相构成,Co以固溶体的形式存在于合金镀层中,镀层在碱性工作条件下具有良好的稳定性。
Ni - Fe - Co alloy coatings were prepared on Q235 steel by electrodeposition, and the microstructure composition and phase of the coat- ings were investigated by scanning electron microscopy （SEM）, energy dispersive spectrometer （EDS） and X-ray diffractometer （XRD）. The effects of several conditions on the electro-catalytic activity of hydrogen evolution were studied by the polarization curve test. Results showed that under 45 mA/cm2, 60℃ and pH = 3.8, the obtained coating had the optimal electro-catalytic hydrogen evolution performance. The opti- mal coating with dense surface structure was constituted by FeNi3 phase with a simple cubic structure, and Co atoms existed as a solid solution in the alloy coatings. Moreover, the prepared coating had good stability in alkaline conditions.
作者
秦海森
宁渊程
王书亮
王丰
刘丽
QIN Hai-sen, NING Yuan-cheng, WANG Shu-liang, WANG Feng, LIU Li(School of Materials Science and Engineering, Southwest Petroleum University, Chengdu 610500, Chin)
出处
《材料保护》
CAS
CSCD
北大核心
2018年第2期65-68,81,共5页
Materials Protection
基金
国家自然科学基金(51374180)
能源材料化学科研创新团队(2015CXTD04)
西南石油大学大学生创新训练项目(201610615082)资助
