NiS2 Nanoparticles Grown on Reduced Graphene Oxide Co-Doped with Sulfur and Nitrogen for Enhanced Hydrogen Evolution Reaction in Acid Media. Issue 1 (27th January 2022)

• Record Type: Journal Article
• Authors: Lin, Songmin; Yu, Yuan; Sun, Dongfeng; Meng, Fangyou; Chu, Wenhui; Ren, Jie; Huang, Linyin; Su, Qingmei; Ma, Shufang; Xu, Bingshe
• Is Part Of: Journal of the Electrochemical Society. Volume 169:Issue 1(2022)
• Publication Date: 2022-01-27
• Subjects: co-doped reduced graphene oxide -- electrocatalyst -- hydrogen evolution reaction -- overvoltage -- current density; Electrochemistry -- Periodicals; 541.3705
• DOI: 10.1149/1945-7111/ac4c76
• Languages: English
• ISSNs: 0013-4651

Abstract

Abstract : NiS2 nanoparticle electrocatalysts grown on sulfur and nitrogen co-doped reduced graphene oxide (NiS2 /S, N-rGO) were explored. Since the hybrid catalyst of NiS2 /S, N-rGO had a large surface area and high conductivity, it demonstrated outstanding electrocatalytic properties. This NiS2 /S, N-rGO hybrid electrocatalyst required only 95 mV overvoltage to reach the current density of 10 mA cm −2 in hydrogen evolution reaction (HER) in acidic solution. In addition, the 5000 cycles test experiment showed the excellent HER electrochemical stability of the NiS2 /S, N-rGO catalyst. This work also provided new strategies for increasing the catalytic activity of non-precious metal electrocatalysts.