Perović Ivana, Marčeta Kaninski Milica, Tasić Gvozden, Maslovara Sladjana, Laušević Petar, Seović Mina, Nikolić Vladimir
Department of Physical Chemistry, "Vinča" Institute of Nuclear Sciences-National Institute of the Republic of Serbia, University of Belgrade, Mike Petrovića Alasa 12-14, 11351 Belgrade, Serbia.
Institute of General and Physical Chemistry, Studentski trg 12/V, 11158 Belgrade, Serbia.
Materials (Basel). 2023 Jul 27;16(15):5268. doi: 10.3390/ma16155268.
Green hydrogen produced by alkaline electrolysis is a promising solution to address the world's increasing energy demand while mitigating greenhouse gas emissions. However, the efficient and cost-effective production of green hydrogen via alkaline electrolysis requires improvements. This paper presents an in situ activation process that simplifies the alkaline electrolysis technology while enhancing the catalytic activity of electrodes for the hydrogen evolution reaction. The aim of this research is to enhance the energy efficiency of alkaline electrolysis and decrease the energy consumption for hydrogen production. To achieve this goal, ionic activators comprising Ni, Zn, and Mo were incorporated into the standard electrolyte solution. Our results demonstrate that the anticipated improvement in the catalytic activity of the d-metal combination, surpassing even that of precious metals, has been successfully attained. As a result, a 20% reduction in energy consumption (REC) for the hydrogen produced has been observed. The catalytic activity of the added activators for the hydrogen evolution reaction was discussed by analyzing the mechanism of the reaction via Tafel analysis and EIS techniques. These findings offer a promising approach to improve alkaline electrolysis and enhance the production of green hydrogen.
通过碱性电解生产的绿色氢气是满足全球不断增长的能源需求同时减少温室气体排放的一个有前景的解决方案。然而，通过碱性电解高效且经济高效地生产绿色氢气仍需要改进。本文提出了一种原位活化工艺，该工艺简化了碱性电解技术，同时提高了电极对析氢反应的催化活性。本研究的目的是提高碱性电解的能源效率并降低制氢能耗。为实现这一目标，将包含镍、锌和钼的离子活化剂加入到标准电解液中。我们的结果表明，已成功实现了d金属组合催化活性的预期提高，甚至超过了贵金属。结果，观察到所产氢气的能耗降低了20%。通过塔菲尔分析和电化学阻抗谱技术分析反应机理，讨论了添加的活化剂对析氢反应的催化活性。这些发现为改进碱性电解和提高绿色氢气产量提供了一种有前景的方法。
