首页|V3TiNi0.56Crx(x=0,0.2,0.4,0.6)/NiMoW钒基复合析氢阴极电催化与耐蚀性能研究

V3TiNi0.56Crx(x=0,0.2,0.4,0.6)/NiMoW钒基复合析氢阴极电催化与耐蚀性能研究

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主要研究了金属元素Cr对钒基复合析氢阴极V3TiNi0.56Crx(x=0,0.2,0.4,0.6)/NiMoW合金物相、形貌、电催化性能与耐腐蚀性能的影响.结果表明:随着合金基体材料中Cr含量增加,基体合金表面形成了钝化膜,能够使基体材料在电化学腐蚀的过程中产生钝化区.钒基复合析氢阴极的电催化能力略有下降,由极化曲线外推法计算得到自腐蚀电流减小3.61mA/cm、自腐蚀电位正移0.154 V.长时间电解后,钒基复合析氢阴极表面形成的缝隙减少,电流密度变化幅度减小,说明掺杂金属元素Cr后,其耐蚀性能与长效稳定性均有所提高.
Study on the corrosion resistance of vanadium-based V3TiNi0.56Crx(x=0,0.2,0.4,0.6)/NiMoW composite cathode for hydrogen evolution
This article mainly studied the influence of Cr element on the electrocatalytic performance and corrosion resistance of vanadium-based V3TiNi0.56Crx(x=0,0.2,0.4,0.6)/NiMoW composite cathode for hydrogen evolution.The phase,morphology,electrocatalytic performance,and corrosion resistance of V3TiNi0.56Crx(x=0,0.2,0.4,0.6)/NiMoW alloy during the electrocatalytic process is analyzed.A passiv-ation film is formed on the surface of the matrix alloy,which can create a passivation zone in the elec-trochemical corrosion process of the matrix material.It is considered to contain Ni and Cr interstitial substituents.The electrocatalytic ability of vanadium-based composite cathode for hydrogen evolution slightly decreases.The self-corrosion current decreases by 3.61 mA/cm and the self-corrosion potential shifts forward by 0.154 V,which is calculated by the polarization curve extrapolation method.After long-term electrolysis,the amount of gaps formed on its surface decrease,and only slight changes exis-ted in the amplitude of current density change,indicating that its corrosion resistance and long-term sta-bility have been improved.

vanadium based composite hydrogen evolution cathodemechanical alloyingelectrodepos-itionelectrocatalysiscorrosion resistancelong-term stability

杜金晶、张轩、周宇、崔新新、朱军、左恒、王斌、鲍彦如、刘景田、郭悦豪

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西安建筑科技大学冶金工程学院,陕西西安 710055

陕西五洲矿业股份有限公司,陕西商洛 726000

钒基复合析氢阴极 机械合金化 电沉积 电催化 耐蚀性能 长效稳定性

陕西省科技厅区域创新能力引导计划资助项目陕西省"两链融合"校企联合重点专项

2022QFY10-052022LL-JB-09

2024

10.7513/j.issn.1004-7638.2024.04.008

钢铁钒钛
攀钢集团攀枝花钢铁研究院有限公司

钢铁钒钛

CSTPCD北大核心
影响因子：0.395
ISSN：1004-7638
年,卷(期)：2024.45(4)