New Energy Research Institute, School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Center , Guangzhou, Guangdong 510006, China.
Department of Chemistry and Biochemistry, University of California , 1156 High Street, Santa Cruz, California 95064, United States.
ACS Appl Mater Interfaces. 2016 Mar 2;8(8):5065-9. doi: 10.1021/acsami.6b00233. Epub 2016 Feb 19.
Acidic electrolytes are advantageous for water electrolysis in the production of hydrogen as there is a large supply of H(+) ions in the solution. In this study, with the applied overpotential larger than the equilibrium potential of Ni(0)/Ni(2+), Ni foam as HER electrode exhibits excellent and stable HER activity with an onset potential of -84 mV (vs RHE), a high current density of 10 mA cm(-2) at -210 mV (vs RHE), and prominent electrochemical durability (longer than 5 days) in acidic electrolyte. The results presented herein may has potential large-scale application in hydrogen energy production.
酸性电解质在生产氢气的水电解中具有优势，因为溶液中有大量的 H(+)离子。在这项研究中，由于施加的过电势大于 Ni(0)/Ni(2+)的平衡电势，泡沫镍作为 HER 电极在酸性电解质中表现出优异且稳定的 HER 活性，起始电位为-84 mV（相对于 RHE），在-210 mV（相对于 RHE）时的电流密度高达 10 mA cm(-2)，电化学耐久性突出（超过 5 天）。本文的研究结果在氢能生产方面可能具有潜在的大规模应用前景。
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