Effect of dispersion of nanosize platinum particles on electrical conduction properties of proton-conducting oxide SrZr0.9Y 0.1O3-α

Hiroshige Matsumoto, Yoshihisa Furya, Sachio Okada, Takayoshi Tanji, Tatsumi Ishihara

    Research output: Contribution to journalArticlepeer-review

    18 Citations (Scopus)

    Abstract

    Nanosize effects have gradually become emphasized in the description of ion conduction properties of solids. The authors demonstrate a nanoionics effect that occurs in a proton-conducting perovskite upon dispersing fine platinum particles in the oxide. Both the ionic and hole conductivities are lost when the volume fraction of dispersed platinum exceeds a threshold value, resulting in an enormous reduction in both conductivities. These experimental results are discussed in accordance with a percolation model: the boundary layer, where charge carriers are suppressed by a space charge layer effect, blocks the bulk conduction of both protonic and electron-hole charge carriers.

    Original languageEnglish
    JournalElectrochemical and Solid-State Letters
    Volume10
    Issue number4
    DOIs
    Publication statusPublished - Feb 19 2007

    All Science Journal Classification (ASJC) codes

    • Chemical Engineering(all)
    • Materials Science(all)
    • Physical and Theoretical Chemistry
    • Electrochemistry
    • Electrical and Electronic Engineering

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