【摘 要】
：
Inefficient electrocatalysts and high-power consumption are two thorny problems for electrochemical hydrogen (H2) production from acidic water electrolysis.Herein we report the one-pot precise synthesis of ultrafine Au core-PtAu alloy shell nanowires (Au@
【机 构】
：
Key Laboratory of Macromolecular Science of Shaanxi Province,Key Laboratory of Applied Surface and C
论文部分内容阅读
Inefficient electrocatalysts and high-power consumption are two thorny problems for electrochemical hydrogen (H2) production from acidic water electrolysis.Herein we report the one-pot precise synthesis of ultrafine Au core-PtAu alloy shell nanowires (Au@PtxAu UFNWs).Among them,Au@Pto.o77Au UFNWs exhibit the best performance for formic acid oxidation reaction (FAOR) and hydrogen evolution reaction(HER),which only require applied potentials of 0.29 V and-22.6 mY to achieve a current density of 10 mA cm-2,respectively.The corresponding formic acid electrolyzer realizes the electrochemical H2 production at a voltage of only 0,51 V with 10 mA cm-2 current density.Density functional theory(DFT) calculations reveal that the Au-riched PtAu alloy structure can facilitates the direct oxidation path-way of FAOR and consequently elevates the FAOR activity of Au@Pt0.077Au UFNWs.This work provides meaningful insights into the electrochemical H2 production from both the construction of advanced bifunctional electrocatalysts and the replacement of OER.
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