RuO: X-decorated multimetallic hetero-nanocages as highly efficient electrocatalysts toward the methanol oxidation reaction

Jongsik Park, Hee Jin Kim, Aram Oh, Taehyun Kwon, Hionsuck Baik, Sang Il Choi, Kwangyeol Lee

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Direct methanol fuel cell technology awaits the development of highly efficient and robust nanocatalysts driving the methanol oxidation reaction (MOR) in a CO poisoning-free fashion. Thus far, various Pt-based alloy nanoparticles have been studied as electrocatalysts toward the MOR, and it has been found that the introduction of dopants such as Ru and Cu to Pt has been particularly successful in mitigating the CO poisoning problem. Herein, we report a facile synthesis of Ru-branched RuPtCu nanocages that involves in situ formation of Ru-doped PtCu nanoparticles and subsequent outgrowth of Ru branches by insertion of additional Ru precursors. We show that the electrocatalytic activity and stability of Ru branched RuPtCu ternary nanocages toward the MOR are greatly improved compared to those of PtCu/C and RuPtCu/C counterparts and state-of-the-art PtRu/C and Pt/C catalysts, mainly due to the synergy between the CO-tolerant RuOx phase and the highly open and robust RuPtCu nanoframe.

Original languageEnglish
Pages (from-to)21178-21185
Number of pages8
JournalNanoscale
Volume10
Issue number45
DOIs
Publication statusPublished - 2018 Dec 7

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Electrocatalysts
Carbon Monoxide
Methanol
Oxidation
Nanoparticles
Direct methanol fuel cells (DMFC)
Doping (additives)
Catalysts

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

RuO: X-decorated multimetallic hetero-nanocages as highly efficient electrocatalysts toward the methanol oxidation reaction. / Park, Jongsik; Kim, Hee Jin; Oh, Aram; Kwon, Taehyun; Baik, Hionsuck; Choi, Sang Il; Lee, Kwangyeol.

In: Nanoscale, Vol. 10, No. 45, 07.12.2018, p. 21178-21185.

Research output: Contribution to journalArticle

Park, Jongsik ; Kim, Hee Jin ; Oh, Aram ; Kwon, Taehyun ; Baik, Hionsuck ; Choi, Sang Il ; Lee, Kwangyeol. / RuO: X-decorated multimetallic hetero-nanocages as highly efficient electrocatalysts toward the methanol oxidation reaction. In: Nanoscale. 2018 ; Vol. 10, No. 45. pp. 21178-21185.
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