Miao Yujie, Huang Qiuping, Wen Dan, Xie Dongling, Huang Bo, Lin Dunmin, Xu Chenggang, Zeng Wen, Xie Fengyu
College of Chemistry and Materials Science, Sichuan Normal University Chengdu 610068 P. R. China
School of Chemistry and Chemical Engineering, Chongqing University Chongqing 401331 P. R. China
RSC Adv. 2023 Feb 1;13(7):4249-4254. doi: 10.1039/d2ra07666g. eCollection 2023 Jan 31.
Designing and developing earth-abundant electrocatalysts for the oxygen evolution reaction (OER) in alkaline media is a critical element in the societal development of sustainable energy. MIL-53(Fe-Ni)/NF-2200Gs was synthesized under an external magnetic field. Such MIL-53(Fe-Ni)/NF-2200Gs show exceptionally high catalytic activity and require an overpotential of only 174 mV to drive a geometrical catalytic current density of 10 mA cm in 1.0 M KOH, superior to RuO and most Fe, Ni-based electrocatalysts. Our work emphasizes the optimization of catalytic activity originating from the improvement of the magnetic properties of the catalyst, which enhances the spin polarization and tailors the d-electron structure of cations, leading to outstanding OER activity. This work would open new opportunities to design and develop transition-metal-based nanometer arrays toward efficient and stable water oxidation in alkaline media for applications.
设计和开发用于碱性介质中析氧反应（OER）的储量丰富的地球电催化剂是可持续能源社会发展的关键要素。MIL-53(Fe-Ni)/NF-2200Gs是在外部磁场下合成的。这种MIL-53(Fe-Ni)/NF-2200Gs表现出极高的催化活性，在1.0 M KOH中驱动10 mA cm几何催化电流密度仅需174 mV的过电位，优于RuO以及大多数铁、镍基电催化剂。我们的工作强调了通过改善催化剂的磁性来优化催化活性，这增强了自旋极化并调整了阳离子的d电子结构，从而产生出色的OER活性。这项工作将为设计和开发基于过渡金属的纳米阵列以在碱性介质中实现高效稳定的水氧化应用开辟新的机会。
