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dc.contributor.authorCheng, Yi
dc.contributor.authorShen, P.
dc.contributor.authorSaunders, M.
dc.contributor.authorJiang, San Ping
dc.date.accessioned2017-01-30T10:59:00Z
dc.date.available2017-01-30T10:59:00Z
dc.date.created2015-10-29T04:09:23Z
dc.date.issued2015
dc.identifier.citationCheng, Y. and Shen, P. and Saunders, M. and Jiang, S.P. 2015. Core-Shell Structured PtRuCo x Nanoparticles on Carbon Nanotubes as Highly Active and Durable Electrocatalysts for Direct Methanol Fuel Cells. Electrochimica Acta. 177: pp. 217-226.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/7316
dc.identifier.doi10.1016/j.electacta.2015.01.137
dc.description.abstract

Ternary alloy PtRuCox nanoparticles (NPs) with Co-rich core and PtRu skinned shell on carbon nanotubes (CNTs) have been successfully synthesized as electrocatalysts for methanol oxidation reaction (MOR) of direct methanol fuel cells (DMFCs) via a successive dealloying and annealing treatment of PtRuCo alloy particles. The best results were obtained on dealloyed PtRuCox NPs annealed at 450 °C in argon with x = 0.48, characterizing by a ~1 nm thick Co-free PtRu shell. The core–shell structured PtRuCox catalysts exhibit a high activity for MOR, 400 A g−1pt measured at 0.40 V (vs Ag/AgCl), almost 4 times higher than 104 A g−1Pt for the reaction on the PtRuCo alloy before deallaying and annealing treatment. The core–shell structured PtRuCox NPs also show excellent structural stability; maintaining 74% of the activity after 1000 cycle between −0.2 to 1.0 V (vs. Ag/AgCl), significantly higher than 49% for PtRuCo and 25% for the conventional PtRu/C catalysts. The results demonstrate that the successive dealloying and annealing treatment is very effective to synthesize core–shell structured PtRuCox ternary alloy electrocatalysts with high activity and durability for DMFCs.

dc.publisherElsevier Ltd
dc.titleCore-Shell Structured PtRuCo x Nanoparticles on Carbon Nanotubes as Highly Active and Durable Electrocatalysts for Direct Methanol Fuel Cells
dc.typeJournal Article
dcterms.source.issn0013-4686
dcterms.source.titleElectrochimica Acta
curtin.departmentFuels and Energy Technology Institute
curtin.accessStatusFulltext not available


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