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化工新型材料  2019, Vol. 47 Issue (7): 163-168    
  科学研究 本期目录 | 过刊浏览 | 高级检索 |
泡沫镍负载NiFeMoCu析氢阴极电极材料的电化学制备研究
孙强强
陕西省尾矿资源综合利用重点实验室商洛学院,商洛726000
Electrochemical preparation of Ni-Fe-Mo-Cu on nickel foam cathode for high-efficiency HER
Sun Qiangqiang
Shaanxi Key Laboratory of Comprehensive Utilization of Tailings Resources, Shangluo University,Shangluo 726000
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摘要 以泡沫镍(NF)为基板,分别通过恒电位法(i-t)和计时电位法(CP)沉积镍铁钼铜四元合金,经去合金化处理,获得了具有高催化活性的析氢阴极电极材料NiFeMoCu/NF。电沉积过程设计了6种电解液配方进行优选,去合金化处理时采用恒电位法(i-t)分别进行了金属铜的原位溶出和独立溶出。结果表明:参照配方4的物料配比组织电解液,以计时电位法沉积四元合金,经铜的独立溶出后制得了由纳米颗粒堆积而成团簇状结构的析氢电极材料。在1mol/L KOH溶液中,催化电流密度为10mA/cm2时,NiFeMoCu/NF电极的析氢过电位仅为65mV,其高催化活性主要归因于镍铁钼铜四元合金的金属间协同作用。
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孙强强
关键词:  电化学沉积  水分解  析氢反应  去合金化    
Abstract: Ni-Fe-Mo-Cu quaternary alloy catalysts for hydrogen evolution reaction (HER),which was grown in-situ on nickel foam (NF) substrate by potentiostatic method and chronopotentiometry,respectively,followed by electrochemical dealloying.Six formulas for optimization of electrolyte composition were designed.The in-situ and independent potentiostatic dissolution of Cu in Ni-Fe-Mo-Cu quaternary alloy were respectively achieved during the dealloying process.Results showed that the optimal electrolyte composition was formula 4,NiFeMoCu/NF with cluster structure piled by nanoparticles,prepared by chronopotentiometry followed by the independent selective dissolution of Cu from the deposits.The as-obtained cathode required an overpotential of merely 65 mV to driver a current density of 10mA·cm-2 for HER in 1mol/L KOH.The excellent electrocatalytic activity can be ascribed to the intermetallic synergistic effect between the four metals.
Key words:  electrodeposition    water splitting    hydrogen evolution reaction    dealloying
收稿日期:  2018-03-07                出版日期:  2019-07-20      发布日期:  2019-08-05      期的出版日期:  2019-07-20
基金资助: 陕西省科技厅自然科学基础研究计划项目(2019JM-092);陕西省教育厅重点科学研究项目(17JS036);商洛学院科技计划项目(14SKY023)
作者简介:  孙强强(1985-),男,博士,讲师,主要从事尾矿资源综合利用及催化水分解电极材料研究。
引用本文:    
孙强强. 泡沫镍负载NiFeMoCu析氢阴极电极材料的电化学制备研究[J]. 化工新型材料, 2019, 47(7): 163-168.
Sun Qiangqiang. Electrochemical preparation of Ni-Fe-Mo-Cu on nickel foam cathode for high-efficiency HER. New Chemical Materials, 2019, 47(7): 163-168.
链接本文:  
http://www.hgxx.org/CN/  或          http://www.hgxx.org/CN/Y2019/V47/I7/163
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