Electrode Materials for Hydrogen Production by Alkaline-Water Electrolysis Powered by Renewable Energy Sources

2021 IEEE 2nd KhPI Week on Advanced Technology (KhPIWeek) Pub Date : 2021-09-13 DOI:10.1109/KhPIWeek53812.2021.9570062

A. Maizelis, A. Pilipenko

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引用次数: 1

Abstract

Effectiveness of electrode materials for electrolizers working with renewable energy sources are discussed. The electrochemical behavior of low-alloy chrome-molybdenum-vanadium steel (12Cr1MoV) in a 5 mol.L−1 sodium hydroxide solution is presented and compared with steel of ordinary quality (Steel 3) and nickel that are used in electrolyzers for producing hydrogen. Weight loss tests show that the chrome-molybdenum-vanadium steel is more corrosion-resistant in the tested environment than Steel 3. Overvoltage of oxygen evolution reaction on 12Cr1MoV steel under galvanostatic conditions of 200 m.Arcmr−2 is 40 mV lower than on Steel 3 and 150 mV lower than on nickel. Chrome-molybdenum-vanadium steel is perspective to replace Steel 3 in alkaline water electrolysis both as electrode material and as substrate for different catalytic coatings. Multilayer coating [(Ni-Cu)/(Mi-Mi(OH)2)]n is proposed for use in alkaline electrolysis of water and in fuel cells in systems with renewable energy sources. Proposed electrodes are suitable for use in electrolyzes powered by renewable energy sources as they show lower corrosion rate during pauses and load changes.

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利用可再生能源进行碱-水电解制氢的电极材料

讨论了使用可再生能源的电解器电极材料的有效性。本文介绍了低合金铬钼钒钢（12Cr1MoV）在 5 mol.L-1 氢氧化钠溶液中的电化学行为，并将其与用于电解槽制氢的普通钢（钢 3）和镍进行了比较。失重测试表明，铬钼钒钢在测试环境中比钢 3 更耐腐蚀。在 200 m.Arcmr-2 的静电条件下，12Cr1MoV 钢的氧进化反应过电压比钢 3 低 40 mV，比镍低 150 mV。在碱性水电解中，铬钼钒钢既可作为电极材料，也可作为不同催化涂层的基材，有望取代钢 3。建议将多层涂层 [(Ni-Cu)/(Mi-Mi(OH)2)]n 用于碱性电解水和可再生能源系统中的燃料电池。建议的电极适合用于以可再生能源为动力的电解槽，因为它们在停顿和负载变化时显示出较低的腐蚀率。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2021 IEEE 2nd KhPI Week on Advanced Technology (KhPIWeek)

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