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學年
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111 |
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學期
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1 |
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出版（發表）日期
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2023-01-01 |
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作品名稱
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Atomic Scale Synergistic Interactions Lead to Breakthrough Catalysts for Electrocatalytic Water Splitting |
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作品名稱（其他語言）
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著者
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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 |
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單位
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出版者
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著錄名稱、卷期、頁數
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Applied Catalysis B: Environmental, 320, 122016 |
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摘要
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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. |
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關鍵字
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語言
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en |
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ISSN
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期刊性質
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國外 |
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收錄於
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SCI
SSCI
Scopus
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產學合作
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通訊作者
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Shih-Yuan Lu |
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審稿制度
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是 |
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國別
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NLD |
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公開徵稿
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出版型式
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,電子版 |