Efficient Electrocatalyst for the Hydrogen Evolution Reaction Derived from Polyoxotungstate/Polypyrrole/Graphene. Issue 11 (10th April 2017)

• Record Type: Journal Article
• Authors: Wang, Xiao‐Li; Tang, Yu‐Jia; Huang, Wei; Liu, Chun‐Hui; Dong, Long‐Zhang; Li, Shun‐Li; Lan, Ya‐Qian
• Is Part Of: Chemphyschem. Volume 18:Issue 11(2017)
• Page Start: 2402
• Page End: 2407
• Publication Date: 2017-04-10
• Subjects: graphene -- hydrogen evolution reaction -- polyoxotungstate -- polypyrrole -- tungsten carbide; Chemistry, Physical and theoretical -- Periodicals; 541.05
• DOI: 10.1002/cssc.201700276
• Languages: English
• ISSNs: 1439-4235

Abstract

Abstract: Efficient hydrogen evolution reaction (HER) from water by electrocatalysis using cost‐effective materials is critical to realize the clean hydrogen production. Herein, with controlling the structure and composition of polyoxotungstate/conductive polypyrrole/graphene (PCG) precursor precisely and followed by a temperature‐programmed reaction, we developed a highly active and stable catalyst: NC@W x C/NRGO (NC: nitrogen‐doped porous carbon, NRGO: nitrogen‐doped reduced graphene oxide). The composite presents splendid performance towards HER in acidic media, with a small onset overpotential of 24 mV versus RHE (reversible hydrogen electrode), a low Tafel slope of 58.4 mV dec −1, a low overpotential of 100 mV at 10 mA cm −2, and remarkable long‐term cycle stability. This is one of the highest HER catalysts among the tungsten carbide‐based materials ever reported. Abstract : W‐onderful C‐atalyst : New 2 D tungsten carbide‐based materials (NC@W x C/NRGO) are synthesized by controlling the structure and composition of polyoxotungstate/conductive polypyrrole/graphene (PCG) precursor precisely and performing a temperature‐programmed reaction. The composite presents splendid performance toward the hydrogen evolution reaction (HER) in acidic media and is one of the highest HER catalysts among the tungsten carbide‐based materials.