Pd<inf>2</inf>Sn [010] nanorods as a highly active and stable ethanol oxidation catalyst

Zhishan Luo, Jianmin Lu, Cristina Flox, Raquel Nafria, Aziz Genç, Jordi Arbiol, Jordi Llorca, Maria Ibáñez, Joan Ramon Morante, Andreu Cabot

    Research output: Contribution to journalArticleResearchpeer-review

    38 Citations (Scopus)

    Abstract

    © 2016 The Royal Society of Chemistry. The development of highly active, low cost and stable electrocatalysts for direct alcohol fuel cells remains a critical challenge. While Pd2Sn has been reported as an excellent catalyst for the ethanol oxidation reaction (EOR), here we present DFT analysis results showing the (100) and (001) facets of orthorhombic Pd2Sn to be more favourable for the EOR than (010). Accordingly, using tri-n-octylphosphine, oleylamine (OLA) and methylamine hydrochloride as size and shape directing agents, we produced colloidal Pd2Sn nanorods (NRs) grown in the [010] direction. Such Pd2Sn NRs, supported on graphitic carbon, showed excellent performance and stability as an anode electrocatalyst for the EOR in alkaline media, exhibiting 3 times and 10 times higher EOR current densities than that of Pd2Sn and Pd nanospheres, respectively. We associate this improved performance with the favourable faceting of the NRs.
    Original languageEnglish
    Pages (from-to)16706-16713
    JournalJournal of Materials Chemistry A
    Volume4
    Issue number42
    DOIs
    Publication statusPublished - 1 Jan 2016

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