【摘 要】
：
Crystalline engineering and heterostructure have attracted much attention as effective strategies to improve the electrocatalytic activity for hydrogen evolution reaction (HER).In this study,a new heterostructure catalyst (Ru/RuS2@N-rGO) with low crystall
【机 构】
：
College of Chemistry and Chemical Engineering,Henan University of Technology,Zhengzhou 450001,China;
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Crystalline engineering and heterostructure have attracted much attention as effective strategies to improve the electrocatalytic activity for hydrogen evolution reaction (HER).In this study,a new heterostructure catalyst (Ru/RuS2@N-rGO) with low crystallinity was fabricated by a simple and low-temperature method for HER in alkaline solution,applying the Na2SO4 as S source and polypyrrole as N source.Optimizing through the controllable crystalline engineering and composition ratio of Ru and RuS2,the Ru/RuS2@N-rGO heterocatalyst at the calcining 500 ℃ revealed highly efficient HER activity with overpotential18 mV at a current density 10 mA/cm2 and remarkable stability for 24 h in 1.0 mol/L KOH.This work provides a facile and effective method in designing advanced electrocatalysts for HER in the alkaline electrolytes by synergistically structural and component modulations.
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