A highly efficient electrocatalyst based on amorphous Pd-Cu-S material for hydrogen evolution reaction

作者：Xu, Wence; Zhu, Shengli^*; Liang, Yanqin; Cui, Zhenduo; Yang, Xianjin; Inoue, Akihisa; Wang, Hongxia^*

来源：Journal of Materials Chemistry A, 2017, 5(35): 18793-18800.

DOI：10.1039/c7ta05314b

• MOLYBDENUM SULFIDE
• GRAPHENE
• NI
• PERFORMANCE
• CATALYST
• REDUCTION
• ELECTRODE
• NANORODS
• METALS
• ALLOY

Hydrogen evolution reactions (HER) through water splitting draws tremendous attention as a way for generating clean energy. In this process, developing cost-effective, efficient non-Pt electrocatalysts is highly important for HER practical applications. In this work, we demonstrate a highly efficient and stable electrocatalyst based on amorphous Pd-Cu-S material. We found that the existence of abundant bridging S-2(2-) and apical S2- species and charge redistribution between Pd and Cu atoms in the material provided significantly enhanced electrocatalytic activity for HER, leading to a small overpotential of 58 mV at 10 mA cm(-2) and a Tafel slope of only 35 mV dec(-1), which is close to commercial Pt-based catalysts. Furthermore, the material demonstrated excellent electrochemical durability with no performance decrease in HER for 48 h even in 7 M H2SO4 solution, indicating its great potential as a non-Pt catalyst for HER water splitting.

• 出版日期2017-9-21
• 单位天津大学