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首页> 外文期刊>Advanced energy materials >Chemically Stable Yttrium and Tin Co-Doped Barium Zirconate Electrolyte for Next Generation High Performance Proton-Conducting Solid Oxide Fuel Cells
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Chemically Stable Yttrium and Tin Co-Doped Barium Zirconate Electrolyte for Next Generation High Performance Proton-Conducting Solid Oxide Fuel Cells

机译：化学稳定的钇和锡共掺杂锆酸钡电解质，用于下一代高性能质子传导固体氧化物燃料电池

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摘要

BaZr_(0.7)Sn_(0.1)Y_(0.2)O_(3-δ) (BZSY) is developed as a novel chemically stable proton conductor for solid oxide fuel cells (SOFCs). BZSY possesses the same cubic symmetry of space group Pm-3m with BaZr_(0.8)Y_(0.2)O_(3-δ) (BZY). Thermogravi-metric analysis (TGA) and X-ray photoelectron spectra (XPS) results reveal that BZSY exhibits remarkably enhanced hydration ability compared to BZY. Correspondingly, BZSY shows significantly improved electrical conductivity. The chemical stability test shows that BZSY is quite stable under atmospheres containing CO_2 or H_2O. Fully dense BZSY electrolyte films are successfully fabricated on NiO-BZSY anode substrates followed by co-firing at 1400 ℃ for 5 h and the film exhibits excellent electrical conductivity under fuel cell conditions. The single cell with a 12-μm-thick BZSY electrolyte film outputs by far the best performance for acceptor-doped BaZrO_3-based SOFCs. With wet hydrogen (3% H_2O) as the fuel and static air as the oxidant, the peak power density of the cell achieves as high as 360 mWcm~(-2) at 700 ℃, an increase of 42% compared to the reported highest performance of BaZrO_3-based cells. The encouraging results demonstrate that BZSY is a good candidate as the electrolyte material for next generation high performance proton-conducting SOFCs.
机译：BaZr_（0.7）Sn_（0.1）Y_（0.2）O_（3-δ）（BZSY）被开发为用于固体氧化物燃料电池（SOFC）的新型化学稳定质子导体。 BZSY具有与BaZr_（0.8）Y_（0.2）O_（3-δ）（BZY）相同的空间群Pm-3m的立方对称性。热重分析（TGA）和X射线光电子能谱（XPS）结果表明，与BZY相比，BZSY的水合能力显着提高。相应地，BZSY显示出明显改善的电导率。化学稳定性测试表明，BZSY在含有CO_2或H_2O的气氛下非常稳定。在NiO-BZSY阳极基板上成功制备了完全致密的BZSY电解质膜，然后在1400℃共烧5 h，该膜在燃料电池条件下具有优异的导电性。迄今为止，具有12μm厚BZSY电解质膜的单电池对于掺有掺杂剂的BaZrO_3的SOFC表现出最佳性能。以湿氢（3％H_2O）为燃料，以静态空气为氧化剂，在700℃时，电池的峰值功率密度达到360 mWcm〜（-2），比报道的最高值高42％。 BaZrO_3基电池的性能。令人鼓舞的结果表明，BZSY是下一代高性能质子传导SOFC的电解质材料的良好选择。

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  • 来源
    《Advanced energy materials》 |2013年第8期|1041-1050|共10页
  • 作者

    Wenping Sun; Mingfei Liu; Wei Liu;

  • 作者单位

    CAS Key Laboratory of Materials for Energy Conversion Department of Materials Science and Engineering University of Science and Technology of China (USTC) Hefei 230026, P.R. China;

    Center for Innovative Fuel Cell and Battery Technologies School of Materials Science and Engineering Georgia Institute of Technology Atlanta, GA 30332, USA;

    CAS Key Laboratory of Materials for Energy Conversion Department of Materials Science and Engineering University of Science and Technology of China (USTC) Hefei 230026, P.R. China,Key Laboratory of Materials Physics Institute of Solid State Physics Chinese Academy of Sciences Hefei 230031, P.R.China;

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