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A Perovskite Electrocatalyst for Efficient Hydrogen Evolution Reaction
Author(s) -
Xu Xiaomin,
Chen Yubo,
Zhou Wei,
Zhu Zhonghua,
Su Chao,
Liu Meilin,
Shao Zongping
Publication year - 2016
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201600005
Subject(s) - electrocatalyst , praseodymium , perovskite (structure) , materials science , doping , hydrogen , nanotechnology , chemical engineering , inorganic chemistry , chemistry , electrochemistry , optoelectronics , electrode , metallurgy , organic chemistry , engineering
Perovskite oxides are demonstrated for the first time as efficient electrocatalysts for the hydrogen evolution reaction (HER) in alkaline solutions. A‐site praseodymium‐doped Pr 0.5 (Ba 0.5 Sr 0.5 ) 0.5 Co 0.8 Fe 0.2 O 3– δ (Pr0.5BSCF) exhibits dramatically enhanced HER activity and stability compared to Ba 0.5 Sr 0.5 Co 0.8 Fe 0.2 O 3– δ (BSCF), superior to many well‐developed bulk/nanosized nonprecious electrocatalysts. The improved HER performance originates from the modified surface electronic structures and properties of Pr0.5BSCF induced by the Pr‐doping.