Facile fabrication of hierarchical Rh2Ir alloy nanodendrites with excellent HER performance in a broad pH range. (25th November 2020)

• Record Type: Journal Article
• Authors: Liu, Qicheng; Fan, Chuang; Zhou, Xinyi; Liu, Jiaqi; Jiang, Shuang; Wang, Siyuan; Wang, Xiaojun; Tang, Yawen
• Is Part Of: New journal of chemistry. Volume 44:Number 48(2020)
• Page Start: 21021
• Page End: 21025
• Publication Date: 2020-11-25
• Subjects: Chemistry -- Periodicals; Chimie -- Périodiques; 540
• DOI: 10.1039/d0nj04512h
• Languages: English
• ISSNs: 1144-0546

Abstract

Abstract : Hierarchical Rh2 Ir alloy nanodendrites were prepared via a facile oil-bath method, which exhibits excellent HER performance in a broad pH range. Abstract : It is a difficult and long-term task to develop highly active and stable electrocatalysts to realize efficient hydrogen evolution reaction (HER) in electrochemical water splitting. Herein, we report a facile oil-bath method to fabricate hierarchical Rh2 Ir alloy nanodendrites (Rh2 Ir NDs) with excellent HER performance in a broad pH range. Due to the unique branched nanostructure and rational Rh2 Ir metal proportion, the developed Rh2 Ir NDs exhibit superior activity and enhanced stability towards HER in a broad range of pH conditions. To deliver a current density of 10 mA cm −2 in 1 M HClO4 and 1 M KOH, Rh2 Ir NDs require overpotentials of only 12 and 9 mV, respectively. This work not only offers a high-performance electrocatalyst for electrochemical water splitting but also provides a new perspective towards the rational synthesis of hierarchical noble-metal nanodendrites.