Cobalt Assisted Synthesis of IrCu Hollow Octahedral Nanocages as Highly Active Electrocatalysts toward Oxygen Evolution Reaction
- Authors
- Kwon, Taehyun; Hwang, Hyeyoun; Sa, Young Jin; Park, Jongsik; Baik, Hionsuck; Joo, Sang Hoon; Lee, Kwangyeol
- Issue Date
- 17-2월-2017
- Publisher
- WILEY-V C H VERLAG GMBH
- Keywords
- electrocatalysis; iridium-copper-cobalt alloys; octahedral nanocages; oxygen evolution reaction
- Citation
- ADVANCED FUNCTIONAL MATERIALS, v.27, no.7
- Indexed
- SCIE
SCOPUS
- Journal Title
- ADVANCED FUNCTIONAL MATERIALS
- Volume
- 27
- Number
- 7
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/84426
- DOI
- 10.1002/adfm.201604688
- ISSN
- 1616-301X
- Abstract
- 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.
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