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Silica–Polypyrrole Hybrids as High‐Performance Metal‐Free Electrocatalysts for the Hydrogen Evolution Reaction in Neutral Media
Author(s) -
Feng JinXian,
Xu Han,
Ye ShengHua,
Ouyang Gangfeng,
Tong YeXiang,
Li GaoRen
Publication year - 2017
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201702934
Subject(s) - polypyrrole , tafel equation , catalysis , adsorption , materials science , metal , chemical engineering , hydrogen , inorganic chemistry , electrochemistry , chemistry , organic chemistry , polymer , electrode , composite material , polymerization , metallurgy , engineering
Constructing inorganic–organic hybrids with superior properties in terms of water adsorption and activation will lead to catalysts with significantly enhanced electrocatalytic activity in the hydrogen evolution reaction (HER) in environmentally benign neutral media. Herein, we report SiO 2 –polypyrrole (PPy) hybrid nanotubes supported on carbon fibers (CFs) (SiO 2 /PPy NTs–CFs) as inexpensive and high‐performance electrocatalysts for the HER in neutral media. Because of the strong electronic interactions between SiO 2 and PPy, the SiO 2 uniquely serves as the centers for water adsorption and activation, and accordingly promotes the HER. The metal‐free SiO 2 /PPy NTs–CFs displayed high catalytic activity in the HER in neutral media, such as a low onset potential and small Tafel slope, as well as excellent long‐term durability.