The article published in Nature Reviews Materials discusses the advancements in the field of green hydrogen production through water electrolysis. Researchers Yan Shen, Chuan Zhao, Mingkui Wang, and their colleagues have introduced an efficient electrocatalyst that addresses some challenges in current hydrogen production technologies. The use of alkaline water electrolysers with cost-effective catalysts is highlighted as a significant step towards making large-scale hydrogen production more economically viable. The article mentions the benefits of NiMo alloy-based catalysts, emphasizing their strong water dissociation ability and effective hydrogen adsorption for the hydrogen evolution reaction (HER). By combining NiMo with MoO2, the researchers have aimed to enhance the catalyst performance further. However, challenges in optimizing the adsorption and desorption of HER intermediates remain, particularly under high current densities. The study underscores the importance of achieving high stability and efficiency in electrocatalysts for successful large-scale hydrogen production. While the NiMo and MoO2 combination shows promise, the limitations posed by the conductivity of MoO2 highlight the need for continued research and development in this area. Overall, the research presents a positive outlook on the future of hydrogen production, showcasing the potential of novel catalysts to improve the efficiency and stability of electrolysis processes. The findings contribute to the ongoing efforts to advance the hydrogen economy and promote sustainable energy solutions.