Hu Yitao, Liu Ruotong, Shu Kaiqian, Dong Yan, Li Jihong, Wang Tongzhou, Deng Yida
School of Materials Science and Engineering, Hainan University, Haikou 570228, China.
State Key Laboratory of Environment-Friendly Energy Materials, School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China.
J Colloid Interface Sci. 2025 Mar 15;682:180-187. doi: 10.1016/j.jcis.2024.11.202. Epub 2024 Nov 28.
Investigating efficient non-precious metal-based catalysts for water electrolysis to produce hydrogen is a significant and urgent need in the field of clean energy technologies. Moreover, utilizing transition metal dichalcogenides (TMDs) to replace the oxygen evolution reaction (OER) with the urea oxidation reaction (UOR), coupled with the hydrogen evolution reaction (HER), is an effective energy-saving hydrogen production method. A heterostructure NiS/MoO catalyst was prepared by a simple method, which exhibits excellent activity for UOR, requiring only 1.4 V to reach 100 mA cm. The high performance is attributed to the presence of the heterostructure, which effectively promotes charge redistribution and optimizes the electronic structure of the catalyst, thereby enhancing its adsorption capacity for intermediates. As a result, an electrolyzer assembled with NiS/MoO as a bifunctional catalyst demonstrates excellent catalytic activity, ensures stability for over 200 h at a current density of 10 mA cm, and achieves a hydrogen production rate of 0.402 mmol h at a potential of 1.8 V.
研究用于水电解制氢的高效非贵金属基催化剂是清洁能源技术领域的一项重大且迫切需求。此外，利用过渡金属二硫属化物（TMDs）将析氧反应（OER）替换为尿素氧化反应（UOR），并与析氢反应（HER）相结合，是一种有效的节能制氢方法。通过一种简单方法制备了异质结构NiS/MoO催化剂，该催化剂对UOR表现出优异活性，仅需1.4 V即可达到100 mA cm²。高性能归因于异质结构的存在，其有效促进电荷重新分布并优化催化剂的电子结构，从而增强其对中间体的吸附能力。结果，以NiS/MoO作为双功能催化剂组装的电解槽表现出优异的催化活性，在10 mA cm²的电流密度下确保超过200 h的稳定性，并在1.8 V的电位下实现0.402 mmol h⁻¹的产氢速率。
