Electrolytes

J. A. Kilner, John William Richard Druce, T. Ishihara

    研究成果: 書籍/レポート タイプへの寄稿

    抄録

    This chapter discusses fundamental and practical aspects of electrolyte materials for solid oxide fuel cells (SOFCs). We focus on two main families of ceramic electrolytes; those with the fluorite crystal structure (ZrO2- and CeO2-based) and those with perovskite-related structures (La1 - x Sr x Ga1 - y Mg y O3 -(x+ y)/2, CaTiO3 and Brownmillerite). Fundamental factors influencing the oxide ionic conductivity are discussed, including the crystal structure, along with strategies to improve the conductivity by substitution with aliovalent cations to introduce extrinsic point defects (oxygen vacancies). Protonic conductivity in perovskite-structured ceramics is also discussed. Finally, we consider some of the alternative materials, including apatite-structured silicates and LAMOX. Although the latter two families are interesting, we highlight some of the challenges to be overcome for their implementation in practical SOFC systems.

    本文言語英語
    ホスト出版物のタイトルHigh-Temperature Solid Oxide Fuel Cells for the 21st Century
    ホスト出版物のサブタイトルFundamentals, Design and Applications
    出版社Elsevier
    ページ85-132
    ページ数48
    ISBN(電子版)9780124104532
    ISBN(印刷版)9780124104839
    DOI
    出版ステータス出版済み - 1月 1 2015

    !!!All Science Journal Classification (ASJC) codes

    • 工学(全般)

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