Manipulating Spin Exchange Interactions and Spin-Selected Electron Transfers of 2D Metal Phosphorus Trisulfide Crystals for Efficient Oxygen Evolution Reaction
(Chih-Ying Huang in Prof. Chun-Wei Chen’s group)
This work raise a new concept of electrocatalysis involves manipulating spin exchange interactions and spin-selected electron transfers in 2D metal phosphorus trisulfide (FePS3) crystals. By doping with cobalt (Co), this work demonstrates a remarkable enhancement in the oxygen evolution reaction (OER) performance. The Co-doped FePS3 crystals exhibit the emergence of interatomic ferromagnetism due to doping-mediated magnetic exchange interactions, leading to efficient spin-selective electron transfer channels. Furthermore, superconducting quantum interference device (SQUID) magnetometer measurements, in-situ X-ray absorption near edge spectra (XANES), and density functional theory (DFT) simulations were employed to elucidate the mechanism of spin exchange interactions. The findings provide valuable insights into the design of efficient OER catalysts and the exploration of spin states and spin-catalyzed reactions in transition metal-based catalysts. This breakthrough has the potential to pave the way for the development of low-cost, efficient, and stable electrocatalysts.
This work has been published in Advanced Functional Materials, 2023, 33, 2305792.
