Cobalt Assisted Synthesis of IrCu Hollow Octahedral Nanocages as Highly Active Electrocatalysts toward Oxygen Evolution Reaction

Development of oxygen evolution reaction (OER) catalysts with reduced precious metal content while enhancing catalytic performance has been of pivotal importance in cost‐effective design of acid polymer electrolyte membrane water electrolyzers. Hollow multimetallic nanostructures with well‐defined f...

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Bibliographic Details
Published in:Advanced functional materials 2017-02, Vol.27 (7), p.np-n/a
Main Authors: Kwon, Taehyun, Hwang, Hyeyoun, Sa, Young Jin, Park, Jongsik, Baik, Hionsuck, Joo, Sang Hoon, Lee, Kwangyeol
Format: Article
Language:English
Subjects:
Catalysis
Catalysts
Cobalt
Cobalt base alloys
Durability
electrocatalysis
Electrocatalysts
Evolution
Iridium
iridium‐copper‐cobalt alloys
Materials science
Nanostructure
Noble metals
octahedral nanocages
Oxygen
oxygen evolution reaction
Oxygen evolution reactions
Precious metals
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Summary:Development of oxygen evolution reaction (OER) catalysts with reduced precious metal content while enhancing catalytic performance has been of pivotal importance in cost‐effective design of acid polymer electrolyte membrane water electrolyzers. Hollow multimetallic nanostructures with well‐defined facets are ideally suited for saving the usage of expensive precious metals as well as boosting catalytic performances; however, Ir‐based hollow nanocatalysts have rarely been reported. Here, a very simple synthetic scheme is reported for the preparation of hollow octahedral nanocages of Co‐doped IrCu alloy with readily tunable morphology and size. The Co‐doped IrCu octahedral nanocages show excellent electrocatalytic activity and long‐term durability for OER in acidic media. Notably, their OER activity represents one of the best performances among Ir‐based acidic OER catalysts. Novel facet‐controlled Co‐doped IrCu octahedral hollow nanocages exhibit excellent electrocatalytic activity and durability toward the oxygen evolution reaction in acidic conditions.
ISSN:1616-301X
1616-3028
DOI:10.1002/adfm.201604688