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Fabrication of Ba 0.5 Sr 0.5 Co 0.8 Fe 0.2 O 3– δ Catalysts with Enhanced Electrochemical Performance by Removing an Inherent Heterogeneous Surface Film Layer
Author(s) -
Jung JaeIl,
Jeong Hu Young,
Kim Min Gyu,
Nam Gyutae,
Park Joohyuk,
Cho Jaephil
Publication year - 2015
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.201403897
Subject(s) - catalysis , spinel , materials science , perovskite (structure) , oxygen , fabrication , inorganic chemistry , layer (electronics) , chemical engineering , nanotechnology , metallurgy , chemistry , medicine , alternative medicine , organic chemistry , pathology , engineering , biochemistry
A heat‐treatment approach for Ba 0.5 Sr 0.5 Co 0.8 Fe 0.2 O 3– δ (BSCF5582) is introduced as a way of enhancing the electrocatalytic performance of perovskite catalysts. The perovskite made by heat‐treatment in oxygen atmosphere loses around 30 nm of spinel layer on the surface relative to the untreated version, and demonstrates enhanced oxygen reduction reaction and oxygen evolution reaction catalytic activities.