Rational modulation of electronic structure in PtAuCuNi alloys boosts efficient electrocatalytic ethanol oxidation assisted with energy-saving hydrogen evolution

Yao, Hu; Zheng, Yinan; Yu, Xin; Hu, Songjie; Su, Baolian; Guo, Xiaohui

doi:10.1016/j.jechem.2024.02.037

Journal of Energy Chemistry

2024

DOI: 10.1016/j.jechem.2024.02.037

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Rational modulation of electronic structure in PtAuCuNi alloys boosts efficient electrocatalytic ethanol oxidation assisted with energy-saving hydrogen evolution

Hu Yao,

Yinan Zheng,

Xin Yu

et al.

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2024

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Cited by 4 publications

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NiIr Nanowire Assembles as an Efficient Electrocatalyst Towards Oxygen Evolution Reaction in Both Acid and Alkaline Media

Zhang,

Wang,

et al. 2024

Chemistry An Asian Journal

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Oxygen evolution reaction (OER) is the rate‐limiting step in water electrolysis due to its sluggish kinetic, and it is challenging to develop an OER catalyst that could work efficiently in both acid and alkaline environment. Herein, NiIr nanowire assembles (NAs) with unique nanoflower morphology were prepared by a facile hydrothermal method. As a result, the NiIr NAs exhibited superior OER activity in both acid and alkaline media. Specifically, in 0.1 M HClO4, NiIr NAs presented a superior electrocatalytic performance with a low overpotential of merely 242 mV at 10 mA cm‐2 and a Tafel slope of only 58.1 mV dec‐1, surpassing that of commercial IrO2 and pure Ir NAs. And it achieved a significantly higher mass activity of 148.40 A/g at ‐1.5 V versus RHE. In 1.0 M KOH, NiIr NAs has an overpotential of 291 mV at 10 mA cm‐2 and a Tafel slope of 42.1 mV dec‐1. Such remarkable activity makes the NiIr NAs among the best of recently reported representative Ir‐based OER electrocatalysts. Density functional theory (DFT) calculations confirmed alloying effect promotes surface bonding of NiIr with oxygen‐containing reactants, resulting in excellent catalytic properties.

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NiIr Nanowire Assembles as an Efficient Electrocatalyst Towards Oxygen Evolution Reaction in Both Acid and Alkaline Media

Zhang,

Wang,

et al. 2024

Chemistry An Asian Journal

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CuNi alloy for hydrazine oxidation assisted energy-saving urea production via proton exchange membranes

Ji,

Yu,

et al. 2024

Journal of Alloys and Compounds

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Well-defined high entropy-metal nanoparticles: Detection of the multi-element particles by deep learning

Alnaasan,

Al Zoubi,

Alhammadi

et al. 2024

Journal of Energy Chemistry

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Rational modulation of electronic structure in PtAuCuNi alloys boosts efficient electrocatalytic ethanol oxidation assisted with energy-saving hydrogen evolution

Cited by 4 publications

References 57 publications

NiIr Nanowire Assembles as an Efficient Electrocatalyst Towards Oxygen Evolution Reaction in Both Acid and Alkaline Media

NiIr Nanowire Assembles as an Efficient Electrocatalyst Towards Oxygen Evolution Reaction in Both Acid and Alkaline Media

CuNi alloy for hydrazine oxidation assisted energy-saving urea production via proton exchange membranes

Well-defined high entropy-metal nanoparticles: Detection of the multi-element particles by deep learning

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