Guyue Bo, Peng Li, Yameng Fan, Xiaobo Zheng, Mengting Zhao, Qiang Zhu, Yang Fu, Yitong Li, Wei Kong Pang, Wei Hong Lai, Bernt Johannessen, Lars Thomsen, Bruce Cowie, Tianyi Ma, Cheng Wang, Guan Heng Yeoh, Yi Du, Shi Xue Dou, Xun Xu
In this work, 2D ferromagnetic M3 GeTe2 (MGT, M = Ni/Fe) nanosheets with rich atomic Te vacancies (2D-MGTv ) are demonstrated as efficient OER electrocatalyst via a general mechanical exfoliation strategy. X-ray absorption spectra (XAS) and scanning transmission electron microscope (STEM) results validate the dominant presence of metal-O moieties and rich Te vacancies, respectively. The formed Te vacancies are active for the adsorption of OH* and O* species while the metal-O moieties promote the O* and OOH* adsorption, contributing synergistically to the faster oxygen evolution kinetics...
March 16, 2024: Advanced Science (Weinheim, Baden-Wurttemberg, Germany)