A highly efficient electrocatalyst based on amorphous Pd–Cu–S material for hydrogen evolution reaction. Issue 35 (24th August 2017)

• Record Type: Journal Article
• Authors: Xu, Wence; Zhu, Shengli; Liang, Yanqin; Cui, Zhenduo; Yang, Xianjin; Inoue, Akihisa; Wang, Hongxia
• Is Part Of: Journal of materials chemistry. Volume 5:Issue 35(2017)
• Page Start: 18793
• Page End: 18800
• Publication Date: 2017-08-24
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c7ta05314b
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : Hydrogen evolution reactions (HER) through water splitting draws tremendous attention as a way for generating clean energy. Abstract : 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 S2 2− and apical S 2− 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 H2 SO4 solution, indicating its great potential as a non-Pt catalyst for HER water splitting.