Lu Borong, Lv Chunmei, Xie Ying, Gao Lianxin, Yan Jun, Zhu Kai, Wang Guiling, Cao Dianxue, Ye Ke
Key Laboratory of Superlight Materials and Surface Technology of Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin, 150001, P. R. China.
Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin, 150080, P. R. China.
Small. 2023 Oct;19(41):e2302923. doi: 10.1002/smll.202302923. Epub 2023 Jun 13.
Electrocatalytic oxidation of urea (UOR) is a potential energy-saving hydrogen production technology that can replace oxygen evolution reaction (OER). Therefore, CoSeP/CoP interface catalyst is synthesized on nickel foam using hydrothermal, solvothermal, and in situ template methods. The strong interaction of tailored CoSeP/CoP interface promotes the hydrogen production performance of electrolytic urea. During the hydrogen evolution reaction (HER), the overpotential can reach 33.7 mV at 10 mA cm . The cell voltage can reach 1.36 V at 10 mA cm in the overall urea electrolytic process. Notably, the overall urine electrolysis performance of the catalyst in the human urine medium can reach 1.40 V at 10 mA cm and can exhibit durable cycle stability at 100 mA cm . Density functional theory (DFT) proves that the CoSeP/CoP interface catalyst can better adsorb and stabilize reaction intermediates CO* and NH* on its surface through a strong synergistic effect, thus enhancing the catalytic activity.
尿素电催化氧化（UOR）是一种具有潜力的节能制氢技术，可替代析氧反应（OER）。因此，采用水热法、溶剂热法和原位模板法在泡沫镍上合成了CoSeP/CoP界面催化剂。定制的CoSeP/CoP界面的强相互作用促进了电解尿素的产氢性能。在析氢反应（HER）过程中，在10 mA cm 时过电位可达33.7 mV。在整个尿素电解过程中，在10 mA cm 时电池电压可达1.36 V。值得注意的是，该催化剂在人尿介质中的整体尿液电解性能在10 mA cm 时可达1.40 V，且在100 mA cm 时可表现出持久的循环稳定性。密度泛函理论（DFT）证明，CoSeP/CoP界面催化剂可通过强协同效应在其表面更好地吸附和稳定反应中间体CO和NH，从而提高催化活性。
