Atomic Scale Synergistic Interactions Lead to Breakthrough Catalysts for Electrocatalytic Water Splitting
學年 111
學期 1
出版（發表）日期 2023-01-01
作品名稱 Atomic Scale Synergistic Interactions Lead to Breakthrough Catalysts for Electrocatalytic Water Splitting
作品名稱（其他語言）
著者 Chun-Lung Huang; Yan-Gu Lin; Chao-Lung Chiang; Chun-Kuo Peng; Duraisamy Senthil Raja; Cheng-Ting Hsieh; Yu-An Chen; Shun-Qin Chang; Yong-Xian Yeh; Shih-Yuan Lu
單位
出版者
著錄名稱、卷期、頁數 Applied Catalysis B: Environmental 320, 122016
摘要 A breakthrough catalyst for electrocatalytic water splitting, precious-metal-free equi-molar high entropy alloy H-FeCoNiCuMo, is developed through exploring and maximizing strong synergistic interactions between atomically well-mixed constituents of H-FeCoNiCuMo over atomic scales. For overall electrolytic water splitting under severe industrial operation conditions, the H-FeCoNiCuMo//H-FeCoNiCuMo couple requires only an ultralow cell voltage of 1.627 V to deliver an ultrahigh current density of 1500 mA cm−2, and remains stable after a 100-hr continuous operation, largely outperforming a precious metal-based benchmark couple, Pt/C//IrO2, 2.038 V with 55% decay in 24 hr. A new catalytic phenomenon is discovered, two different catalytic mechanisms functioning simultaneously on different constituents of H-FeCoNiCuMo, the Volmer-Heyrovsky route on Co and Cu and Volmer-Tafel route on Ni and Mo, from which a new kinetic model is formulated to predict a new theoretical lower limit of Tafel slope of 15 mV dec−1 for hydrogen evolution reactions.
關鍵字
語言 en
ISSN 0926-3373; 1873-3883
期刊性質 國外
收錄於 SCI SSCI Scopus
產學合作
通訊作者 Shih-Yuan Lu
審稿制度 是
國別 NLD
公開徵稿
出版型式 ,電子版,紙本
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