Synthesis of supported vertical NiS2 nanosheets for hydrogen evolution reaction in acidic and alkaline solution. Issue 42 (8th April 2015)

• Record Type: Journal Article
• Authors: Wu, Xiaolin; Yang, Bin; Li, Zhongjian; Lei, Lecheng; Zhang, Xingwang
• Is Part Of: RSC advances. Volume 5:Issue 42(2015)
• Page Start: 32976
• Page End: 32982
• Publication Date: 2015-04-08
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c5ra01414j
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : We report a two-step synthesis to grow vertical NiS2 nanosheets on a graphite substrate, the NiS2 electrocatalyst showed excellent activity toward hydrogen evolution reaction in a wide pH range. Abstract : We synthesized vertical NiS2 nanosheets supported on a graphite substrate, which were fabricated by the surfactant-templated reaction followed by sulfidation. These nanosheets are efficient electrocatalysts for the hydrogen evolution reaction (HER). Structural characterization revealed that the as-grown NiS2 existed in a pyrite-structure and vertical nanosheets. The NiS2 electrocatalyst exhibited excellent activity and stability toward HER in both acidic and alkaline solution, with low Tafel slopes of ∼40 and ∼80 mV per decade, respectively.