Micro-Solid Oxide Fuel Cell Membranes Prepared by Aerosol-Assisted Chemical Vapor Deposition

作者：Schlupp Meike V F^*; Evans Anna; Martynczuk Julia; Prestat Michel

来源：Advanced Energy Materials, 2014, 4(5): 1301383.

DOI：10.1002/aenm.201301383

Free-standing electrolyte membranes for low-temperature micro-solid oxide fuel cells (micro-SOFCs) are prepared by aerosol-assisted chemical vapor deposition (AA-CVD), a cost-effective, non-vacuum thin-film deposition technique. Thin, yttria-stabilized zirconia (YSZ) membranes (50-400 nm) as well as bilayer membranes of YSZ and gadolinia-doped ceria are prepared at temperatures of 600 degrees C and below. AA-CVD, which is a gas-phase deposition method, allows for the synthesis of precursor-free crystalline layers, thereby limiting the development of tensile stress. High membrane survival rates of around 90% are thus obtained. The columnar structure of the electrolyte ensures high oxygen-ion conductivity and results in negligible ohmic losses. Using sputtered platinum electrodes, the demonstration of a micro-SOFC based on AA-CVD electrolyte is achieved and first power density data of 166 mW cm(-2) at 410 degrees C is obtained.

• 出版日期2014-4