Photon-assisted synthesis of ultra-thin yttria-doped zirconia membranes: Structure, variable temperature conductivity and micro-fuel cell devices
作者： Masaru Tsuchiya , Bo-Kuai Lai , Alex C. Johnson , Shriram Ramanathan
DOI: 10.1016/J.JPOWSOUR.2009.08.072
关键词:
摘要: Abstract We report on the synthesis and functional properties of nanoscale (∼50 nm) dense Y-doped zirconia (YDZ) electrolyte thin films by photon-assisted oxidation Zr–Y precursor alloy films. Crystalline with grain size ∼5 nm were successfully grown at room temperature under ultra-violet (UV) photon irradiation. Microstructure was characterized transmission electron microscopy. The electrochemical conductivity UV YDZ electrolytes investigated over a broad range temperatures using Pt electrodes as function yttria doping concentration. slightly lower electrical in intermediate (400–550 °C) is consistent previous reports oxygen defect annihilation photo-excitation. Micro-fuel cells utilizing such ultra-thin membranes yielded ∼12 mW cm −2 power density 550 °C. results are potential relevance advancing low oxide membrane for energy applications.
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