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Enhancing Oxygen Reduction Activity by Exposing (111) Facets of CoFe 2 O 4 Octahedron on Graphene
Author(s) -
Zhang Yong,
Zhang Guoxin,
Li Wanxi,
Li Xiaoming,
Uchiyama Katsumi,
Chen Chengmeng
Publication year - 2017
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201701892
Subject(s) - graphene , materials science , catalysis , oxygen reduction reaction , octahedron , methanol , hydrothermal circulation , oxygen reduction , facet (psychology) , metal , nanotechnology , composite number , chemical engineering , precious metal , fuel cells , composite material , chemistry , metallurgy , crystal structure , electrode , crystallography , electrochemistry , organic chemistry , psychology , social psychology , personality , engineering , big five personality traits
Efficient catalysts are required to promote oxygen reduction reaction (ORR) in order to implant ORR‐involved clean energy technologies such as fuel cells and metal‐air batteries. In this study, (111) facet‐exposed CoFe 2 O 4 nano‐octahedrons crystals (NOCs) were grown on graphene via facile hydrothermal method and investigated as catalyst for ORR. The as‐made CoFe 2 O 4 NOCs‐graphene composite exhibits very high activity towards ORR, meanwhile, excellent durability and very good tolerance to methanol were observed, which verifies the importance of exposing active facets of non‐precious metal‐based catalysts and also demonstrates its high potentials of replacing precious Pt for practical applications.