Electrical conductivity optimization in electrolyte-free fuel cells by single-component Ce 0.8Sm 0.2O 2-δ-Li 0.15Ni 0.45Zn 0.4 layer

Yanjie Xia, Xiaojuan Liu, Yijia Bai, Hongping Li, Xiaolong Deng, Xiaodong Niu, Xiaojie Wu, Defeng Zhou, Minfeng Lv, Zhongchang Wang, Jian Meng

    Research output: Contribution to journalArticlepeer-review

    54 Citations (Scopus)

    Abstract

    Single-component electrolyte-free fuel cells possess a similar function to the traditional fuel cells with a complex three-component structure. However, how to enhance their electrical properties for practical industrial applications remains a timely and important issue. Here, we report the manipulation of concentration ratios of ionic to electronic conductors in an electrolyte-free Ce 0.8Sm 0.2O 2-δ-Li 0.15Ni 0.45Zn 0.4 by adjusting the relative weight between its two inside compositions. Our systematic investigations reveal that the fuel cell with 30% in weight of Li 0.15Ni 0.45Zn 0.4 exhibits an almost uniform distribution of the two compositions and has a total conductivity as high as 10 × 10 -2 S cm -1 at 600 °C. Such an enhancement is found to be attributed to the established balance between the numbers of its inside ionic and electronic conductors. These findings are relevant for the technological improvement of this new species of electrolyte-free fuel cell and represent an important step toward commercialization of this single-component fuel cell.

    Original languageEnglish
    Pages (from-to)3828-3834
    Number of pages7
    JournalRSC Advances
    Volume2
    Issue number9
    DOIs
    Publication statusPublished - 2012 Apr 21

    ASJC Scopus subject areas

    • Chemical Engineering(all)
    • Chemistry(all)

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