Vertically aligned nanocomposite electrolytes with superior out-of-plane ionic conductivity for solid oxide fuel cells
作者： Qing Su , Daeil Yoon , Aiping Chen , Fauzia Khatkhatay , Arumugam Manthiram
DOI: 10.1016/J.JPOWSOUR.2013.05.137
关键词: Pulsed laser deposition 、 Chemical engineering 、 Electrolyte 、 Crystallinity 、 Oxide 、 Materials science 、 Single crystal 、 Ionic conductivity 、 Nanocomposite 、 Thin film 、 Inorganic chemistry
摘要: Abstract Two-phase (Ce0.9Gd0.1O1.95)0.5/(Zr0.92Y0.08O1.96)0.5 (GDC/YSZ) nanocomposite thin films with vertically aligned structure are grown as the electrolyte for film solid oxide fuel cells (TFSOFCs). X-ray diffraction (XRD) and transmission electron microscopy (TEM) results confirm that GDC YSZ grow separated, high crystallinity nanocolumns tunable column width on both single crystal polycrystalline anode substrates. Impedance measurements demonstrate ∼50% enhancement in ionic conductivity compared to pure single-crystal-like film. The enhanced properties GDC/YSZ (VAN) system may be attributed two-phase strain coupling fast transport rate along vertical interfaces. VAN is applied SOFC a part of cells. overall power density increases more than 40% without electrolyte. This work demonstrates first nanostructured essential ion-transport channels. new provides superior out-of-plane those phase electrolytes well nanolayered electrolytes.
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