Realizing Negatively Charged Metal Atoms through Controllable d-Electron Transfer in Ternary Ir_(1?x)RhxSb Intermetallic Alloy for Hydrogen Evolution Reaction

Zhiping Lin; BeiBei Xiao; Min HuangLinghui YanZongpeng WangYucong HuangShijie ShenQinghua ZhangLin GuWenwu Zhong

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Realizing Negatively Charged Metal Atoms through Controllable d-Electron Transfer in Ternary Ir_(1?x)RhxSb Intermetallic Alloy for Hydrogen Evolution Reaction

机译：Realizing Negatively Charged Metal Atoms through Controllable d-Electron Transfer in Ternary Ir_(1?x)RhxSb Intermetallic Alloy for Hydrogen Evolution Reaction

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Alloying noble metals with non-noble metals is a promising method tofabricate catalysts, with the advantages of reduced noble metal usage andexcellent activity. In this work, electron-abundant Ir/Rh sites, as highly activecenters for the hydrogen evolution reaction (HER), are realized by fabricatingIr_(1?x)Rh_xSb alloys through the arc-melting method. The electron transfer fromSb to Ir/Rh makes the latter negatively charged, leading to considerably optimizedadsorption for active H species during HER. As a result, the Ir_(1?x)RhxSballoy exhibits outstanding activity for HER, with an optimized overpotential of22 mV at 10 mA cm~(–2) and a Tafel slope of 47.6 mV dec~（–1）. This work providesinsights into highly active alloys and sheds light on the utilization of electronabundantmetal atoms.

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来源
《Advanced energy materials》 |2022年第25期|2200855.1-2200855.7|共7页
作者
Zhiping Lin; BeiBei Xiao; Min HuangLinghui YanZongpeng WangYucong HuangShijie ShenQinghua ZhangLin GuWenwu Zhong;
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作者单位

Zhejiang Provincial Key Laboratory for Cutting Tools Taizhou University No. 1139, Shifu Road, Jiaojiang 318000, China;

School of Energy and Power Engineering Jiangsu University of Science and Technology No. 2, Mengxi Road, Zhenjiang 212003, China;

Institution of PhysicsChinese Academic of ScienceNo.8, 3rd South Street, Beijing 100190, ChinaZhejiang Provincial Key Laboratory for Cutting ToolsTaizhou UniversityNo. 1139, Shifu Road, Jiaojiang 318000, China,School of Material Science and Hydrogen EnergyFoshan Institute of TechnologyNo. 18, Jiangwanyi Road, Foshan 528000, China;

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alloys; hydrogen evolution; water splitting;

Realizing Negatively Charged Metal Atoms through Controllable d-Electron Transfer in Ternary Ir_(1?x)RhxSb Intermetallic Alloy for Hydrogen Evolution Reaction

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