铁硼基海绵催化电极的制备及其高效析氢性能  

Preparation and high-efficiency hydrogen evolution performance of iron-boron-based sponge catalytic electrode

作　　者：徐秋雨 王晨峰 王临才[1] 张承龙[1] 郝伟举 Qiuyu XU;Chenfeng WANG;Lincai WANG;Chenglong ZHANG;Weiju HAO(Shanghai Collaborative Innovation Centre for WEEE Recycling,Shanghai Second Polytechnic University,Shanghai 201209,China;College of Science,University of Shanghai for Science and Technology,Shanghai 200093,China;Department of Material Science,Fudan University,Shanghai 200433,China)

机构地区：[1]上海第二工业大学电子废弃物资源化协同创新中心,上海201209 [2]上海理工大学理学院,上海200093 [3]复旦大学材料科学系,上海200433

出　　处：《过程工程学报》2020年第5期599-608,共10页The Chinese Journal of Process Engineering

基　　金：上海第二工业大学重点学科建设项目(编号:XXKZD1602);上海第二工业大学研究生基金资助项目(编号:EGD19YJ0044);国家自然科学基金资助项目(编号:51201035,51276053);中国博士后科学基金资助项目(编号:KLH2021056)。

摘　　要：采用温和化学镀法在非导电基底材料聚氨酯海绵(PU)上成功制备了NiB@Fe–B/PU催化电极,并通过掺杂少量第三种元素,如钴、钼等金属元素制备了NiB@Fe–Co–B/PU和NiB@Fe–Mo–B/PU催化电极。结果表明,掺杂钴、钼可明显提升Ni B@Fe–B/PU催化电极的析氢性能,其中掺杂钴的性能更优。在0.5 mol/L缓冲液(磷酸缓冲盐溶液,PBS)中,NiB@Fe–Co–B/PU电极的析氢反应(HER)过电位仅为161 mV(电流密度, j=50 mA/cm^2),塔菲尔斜率为68.24 mV/dec,且在过电位为61 mV下能够稳定工作24 h以上,电化学稳定性良好。Developing a high efficiency,stability and low cost catalytic electrode is of great practical significance to reduce the overpotential of hydrogen evolution.For this reason,NiB@Fe–B/PU catalytic electrode on non-conductive base material polyurethane sponge(PU)was prepared by a mild electroless plating method in this work.NiB@Fe–Co–B/PU,NiB@Fe–Mo–B/PU catalytic electrode were successfully prepared by doping a small amount of the third element,such as cobalt,molybdenum and other metal elements to improve its hydrogen evolution performance in neutral electrolyte solution.The results showed that the performance of NiB@Fe–B/PU catalytic electrodehad significant improvement by doping of cobalt and molybdenum,and the performance of doping cobalt was better.The overpotential was only 161 mV(current density,j=50 mA/cm^2)and the Tafel slope was 68.24 mV/dec for NiB@Fe–Co–B/PU catalytic electrode to hydrogen evolution reaction(HER)in 0.5 mol/L phosphate buffered saline(PBS).At the same time,the electrode showed good stability,which can work stably for more than 24 h under the overpotential of 61 mV.

关 键 词：化学镀 海绵电极 中性电解液 析氢反应 Fe–B基 

分 类 号：O646[理学—物理化学]