Molybdenum Disulfide/Nitrogen‐Doped Reduced Graphene Oxide Nanocomposite with Enlarged Interlayer Spacing for Electrocatalytic Hydrogen Evolution. Issue 12 (25th April 2016)

• Record Type: Journal Article
• Authors: Tang, Yu‐Jia; Wang, Yu; Wang, Xiao‐Li; Li, Shun‐Li; Huang, Wei; Dong, Long‐Zhang; Liu, Chun‐Hui; Li, Ya‐Fei; Lan, Ya‐Qian
• Is Part Of: Advanced energy materials. Volume 6:Issue 12(2016)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2016-04-25
• Subjects: enlarged interlayer spacing -- hydrogen evolution reaction -- MoS2/RGO -- nitrogen‐doped species; Energy harvesting -- Materials -- Periodicals; Energy conversion -- Materials -- Periodicals; Energy storage -- Materials -- Periodicals; Photovoltaics -- Periodicals; Fuel cells -- Periodicals; Thermoelectric materials -- Periodicals; 621.31
• DOI: 10.1002/aenm.201600116
• Languages: English
• ISSNs: 1614-6832

Abstract

Abstract : Facile design of low‐cost and highly active catalysts from earth‐abundant elements is favorable for the industrial application of water splitting. Here, a simple strategy to synthesize an ultrathin molybdenum disulfide/nitrogen‐doped reduced graphene oxide (MoS2 /N‐RGO‐180) nanocomposite with the enlarged interlayer spacing of 9.5 Å by a one‐step hydrothermal method is reported. The synergistic effects between the layered MoS2 nanosheets and N‐doped RGO films contribute to the high activity for hydrogen evolution reaction (HER). MoS2 /N‐RGO‐180 exhibits the excellent catalytic activity with a low onset potential of −5 mV versus reversible hydrogen elelctrode (RHE), a small Tafel slope of 41.3 mV dec −1, a high exchange current density of 7.4 × 10 −4 A cm −2, and good stability over 5 000 cycles under acidic conditions. The HER performance of MoS2 /N‐RGO‐180 nanocomposite is superior to the most reported MoS2 ‐based catalysts, especially its onset potential and exchange current density. In this work, a novel and simple method to the preparation of low‐cost MoS2 ‐based electrocatalysts with the extraordinary HER performance is presented. Abstract : A simple strategy to synthesize an ultrathin molybdenum disulfide/nitrogen‐doped reduced graphene oxide (MoS2 /N‐RGO‐180) nanocomposite with the enlarged interlayer spacing of 9.5 Å is reported. MoS2 /N‐RGO‐180 exhibits excellent hydrogen evolution reaction (HER) catalytic activity with a low onset potential of −5 mV versus RHE, a small Tafel slope of 41.3 mV dec −1 and good stability over 5000 cycles.