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- Title
Efficient Electrocatalyst for the Hydrogen Evolution Reaction Derived from Polyoxotungstate/Polypyrrole/Graphene.
- Authors
Wang, Xiao‐Li; Tang, Yu‐Jia; Huang, Wei; Liu, Chun‐Hui; Dong, Long‐Zhang; Li, Shun‐Li; Lan, Ya‐Qian
- 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 xC/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.
- Subjects
ELECTROCATALYSTS; HYDROGEN evolution reactions; POLYOXOTUNGSTATES; TEMPERATURE effect; NITROGEN
- Publication
ChemSusChem, 2017, Vol 10, Issue 11, p2402
- ISSN
1864-5631
- Publication type
Article
- DOI
10.1002/cssc.201700276