Zhao Bingxin, Jiang Wenyue, Li Ziting, Zhou Peng, Chen Xiaoshuang, Wang Jinping, Yang Rui, Zuo Chunling
College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar 161006, PR China.
College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar 161006, PR China; Heilongjiang Provincial Key Laboratory of Surface Active Agent and Auxiliary, Qiqihar University, Qiqihar 161006, PR China.
J Colloid Interface Sci. 2025 Mar 15;682:1094-1103. doi: 10.1016/j.jcis.2024.12.045. Epub 2024 Dec 9.
The bifunctional electrocatalysts for hydrogen and oxygen evolution reactions (HER and OER) are crucial pivot in water electrolysis territory. In this study, vertically Fe incorporated CoMoP (Fe-CoMoP) nanosheet honeycomb product with super-hydrophilic and aerophobic features was projected and generated through the straightforward hydrothermal technique and phosphatized process. The Fe-CoMoP catalyst exhibits more distinguished intrinsic activity, accessible active sites, effective charge transfer and weak adhesion of gas bubbles. The overpotentials of dual-function Fe-CoMoP are 87.1 mV for HER and 244.4 mV for OER to drive the current density of 10 mA cm. At room temperature, the overall water splitting reaction of Fe-CoMoP as cathode and anode is carried out at 1.54 V to reach 10 mA cm with good stability. Simultaneously, the Fe-CoMoP couple electrolyzer also presents remarkable water splitting activity and durability in simulated industry circumstances of 6 M KOH, 60 °C at 500 mA cm, which are close to practical conditions.
用于析氢反应和析氧反应（HER和OER）的双功能电催化剂是水电解领域的关键枢纽。在本研究中，通过简单的水热技术和磷化过程设计并制备出具有超亲水性和憎气性的垂直掺入铁的CoMoP（Fe-CoMoP）纳米片蜂窝状产物。Fe-CoMoP催化剂表现出更卓越的本征活性、可及的活性位点、有效的电荷转移以及较弱的气泡附着力。双功能Fe-CoMoP在驱动10 mA cm电流密度时，HER的过电位为87.1 mV，OER的过电位为244.4 mV。在室温下，以Fe-CoMoP作为阴极和阳极的全水分解反应在1.54 V下进行，以达到10 mA cm，且具有良好的稳定性。同时，Fe-CoMoP双电极电解槽在6 M KOH、60°C、500 mA cm的模拟工业环境中也表现出显著的水分解活性和耐久性，这接近实际条件。
