A silver catalyst with a high-energy surface prepared by plasma spraying for the hydrogen evolution reaction. Issue 17 (8th February 2022)

• Record Type: Journal Article
• Authors: Bai, Yu-Yao; Kang, Wen-Jing; Xi, Cong; Yang, Wen-Qi; Li, Zhe; Ma, Zi-Ang; Dong, Cun-Ku; Liu, Hui; Mao, Jing; Ye, Fu-Xing; Du, Xi-Wen
• Is Part Of: Chemical communications. Volume 58:Issue 17(2022)
• Page Start: 2878
• Page End: 2881
• Publication Date: 2022-02-08
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/d1cc06892j
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : A physical technique, plasma spraying, was adopted to grow a self-supported silver electrode with a high-energy (200) surface, which improves the intrinsic activity for the hydrogen evolution reaction. Abstract : A self-supported silver electrode was prepared by plasma spraying and used for catalysing the hydrogen evolution reaction. Thanks to the non-equilibrium synthetic conditions, the silver catalyst exposes high-energy (200) crystal planes, which enhance the adsorption of hydrogen and improve the intrinsic catalytic activity. As a result, the silver catalyst delivers an overpotential of 349 mV at 10 mA cm −2, which was much lower than those of Ag foil (742 mV) and commercial Ag powder (657 mV). This work provides a new idea of preparing active electrocatalysts by traditional processes.