Dimensional construction and morphological tuning of heterogeneous MoS2/NiS electrocatalysts for efficient overall water splitting. Issue 21 (16th May 2018)

• Record Type: Journal Article
• Authors: Zhai, ZhangJie; Li, Chao; Zhang, Lei; Wu, Han-Chun; Zhang, Lei; Tang, Ning; Wang, Wei; Gong, Jinlong
• Is Part Of: Journal of materials chemistry. Volume 6:Issue 21(2018)
• Page Start: 9833
• Page End: 9838
• Publication Date: 2018-05-16
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c8ta03304h
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : Heterogeneous MoS2 /NiS is dimensionally constructed and selectively fine tuned to achieve different morphologies with multi-level interfaces. Abstract : Water splitting for hydrogen production urges the development of cheap, efficient, and durable electrocatalysts. This paper describes the dimensional construction of nickel sulfide (NiS) and molybdenum disulfide (MoS2 ) with heterogeneous structures for the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER). The morphologies of MoS2 /NiS can be finely tuned to aggregations, nanowires and nanocuboids by controlled addition of dioctyl sodium sulfosuccinate (AOT) and hexadecyl trimethyl ammonium bromide (CTAB) as surfactants. MoS2 /NiS nanosheet coupled nanocuboids (MoS2 /NiS NCs) exhibit the best and most stable electrocatalytic activity with 92 and 271 mV overpotentials at 10 and 15 mA cm −2 for the HER and the OER. MoS2 /NiS NCs as an electrolyzer in alkaline media at a current density of 10 mA cm −2 can deliver a cell voltage of 1.61 V with remarkable 45 h durability, making them an ideal catalyst towards practical application for water splitting.