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Efficient Electrocatalyst for the Hydrogen Evolution Reaction Derived from Polyoxotungstate/Polypyrrole/Graphene
Author(s) -
Wang XiaoLi,
Tang YuJia,
Huang Wei,
Liu ChunHui,
Dong LongZhang,
Li ShunLi,
Lan YaQian
Publication year - 2017
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201700276
Subject(s) - overpotential , electrocatalyst , tafel equation , graphene , polypyrrole , catalysis , inorganic chemistry , materials science , hydrogen production , water splitting , oxide , chemical engineering , chemistry , tungsten carbide , nanotechnology , electrode , electrochemistry , composite material , organic chemistry , metallurgy , photocatalysis , engineering
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.