【作者】 冯永超； 魏子栋； 刘勇； 陈四国； 孙才新；

【Author】 Yong-Cao Feng1,2, Zi-Dong Wei*1,2, Yong Liu2, Si-Guo Chen2 and Cai-Xin Sun1 1The Key Laboratory of High Voltage Engineering & Electrical New Technology, Ministry of Education, College of Electrical Engineering, Chongqing University, 400044 Chongqing 2College of Chemistry and Chemical Engineering, Chongqing University, 400044 Chongqing

【机构】 重庆大学电气工程学院高电压与电工新技术教育部重点实验室； 重庆大学化学化工学院；

【摘要】 研究了双脉冲电沉积法制备Ni-P阴极的工艺,以及在这些电极上析氢的催化活性。实验结果表明:在合适的脉冲参数下,用双脉冲电沉积法制备的Ni-P合金电极比用直流电沉积法制备的有更高的析氢催化活性;通过改变电沉积参数,制备了磷含量在5.8-10.0wt%的各种电极,其中磷含量在6.0wt%左右的Ni-P合金电极具有优良的析氢催化性能,采用EDXRF、XRD及SEM方法研究了Ni-P合金镀层的成分和组织结构,探讨了Ni-P合金电极的催化析氢活性与其组织结构的关系。更多还原

【Abstract】 The influence of parameters of a dual-pulses current, i.e., two group of pulse current with different height and width, for electrodeposition of Ni-P alloy on the catalytic activity to hydrogen evolution in alkaline solution was investigated. The results showed that the Ni-P alloy electrode prepared by the dual-pulses current method displayed a better catalysis to hydrogen evolution than those by the direct current method. The Ni-P alloys with P content from 5.8 to 10.0 wt% were fabricated by means of changing deposition technique. It was found that the alloy with P content of 6.0 wt% exhibited the best catalysis to hydrogen evolution in all investigated alloys. The P content in the alloy, however, is not the only factor to cause the difference in catalysis to hydrogen evolution. The difference in surface configuration of the alloy probably plays a more important role in catalysis to hydrogen evolution because the alloy with almost same P content displays a quite different catalysis to hydrogen evolution.更多还原