In Situ Identification of Spin Magnetic Effect on Oxygen Evolution Reaction Unveiled by X-ray Emission Spectroscopy
學年 113
學期 2
出版（發表）日期 2025-04-12
作品名稱 In Situ Identification of Spin Magnetic Effect on Oxygen Evolution Reaction Unveiled by X-ray Emission Spectroscopy
作品名稱（其他語言）
著者 Chih-Ying Huang; Hsin-An Chen; Wei-Xuan Lin; Kuan-Hung Chen; Yu-Chang Lin; Tai-Sing Wu; Chia-Che Chang; Chih-Wen Pao; Wei-Tsung Chuang; Jyh-Chyuan Jan; Yu-Cheng Shao; Nozomu Hiraoka; Jau-Wern Chiou; Pai-Chia Kuo; Jessie Shiue; Deepak Vishnu S. K; Raman Sankar; Zih-Wei Cyue; Way-Faung Pong; Chun-Wei Chen
單位
出版者
著錄名稱、卷期、頁數 Journal of the American Chemical Society 147(16), p.13286-13295
摘要 Manipulating the spin ordering of the oxygen evolution reaction (OER) catalysts through magnetization has recently emerged as a promising strategy to enhance performance. Despite numerous experiments elaborating on the spin magnetic effect for improved OER, the origin of this phenomenon remains largely unexplored, primarily due to the difficulty in directly distinguishing the spin states of electrocatalysts during chemical reactions at the atomic level. X-ray emission spectroscopy (XES), which provides information sensitive to the spin states of specific elements in a complex, may serve as a promising technique to differentiate the onset of OER catalytic activities from the influence of spin states. In this work, we employ the in situ XES technique, along with X-ray absorption spectroscopy (XAS), to investigate the interplay between atomic/electronic structures, spin states, and OER catalytic activities of the CoFe2O4 (CFO) catalyst under an external magnetic field. This enhancement is due to the spin magnetic effect that facilitates spin-selective electron transfer from adsorbed OH– reactants, which strongly depends on the spin configurations of the tetrahedral-(Td) and octahedral-(Oh) sites of both Fe and Co ions. Our result contributes to a comprehensive understanding of magnetic field-assisted electrocatalysis at the atomic level and paves the way for designing highly efficient OER catalysts.
關鍵字
語言 en_US
ISSN 0002-7863; 1520-5126
期刊性質 國外
收錄於 SCI
產學合作
通訊作者
審稿制度 否
國別 USA
公開徵稿
出版型式 ,電子版
相關連結

機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/129396 )