Multi-component nano-composite electrode for SOFCS via thin film technique

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• 作者：Gu Young Cho ; Yoon Ho Lee ; Suk Won Cha
• 关键词：SOFC (solid oxide fuel cell) ; Thin film ; Co-sputtering ; MIEC (mixed ionic electronic conductor) ; NiO-YSZ ; EIS
• 刊名：Renewable Energy
• 出版年：May, 2014
• 年：2014
• 卷：65
• 期：Complete
• 页码：130-136
• 全文大小：2294 K

文摘

NiO-YSZ nano-composite thin film mixed ionic electronic conducting (MIEC) electrode was prepared by co-sputtering technique. Pure nickel target and YSZ target were used for DC and RF sputtering, respectively. XRD analysis was carried out for both as deposited samples and annealed samples. Annealing was conducted at 800聽掳C for 2聽h. Fully crystallized structure was achieved from annealed samples. Investigations of composition ratio versus deposition power and surface morphology were performed using FESEM and EDX. The NiO-YSZ nano-composite thin film was used as an anode on one side of an YSZ electrolyte and porous Pt was used as a cathode on the other side of an electrolyte to form solid oxide fuel cells (SOFCs). The cell test was carried out at 600聽掳C for 10聽h with dry H₂ and air. The open circuit voltage was measured 1.016聽V and reduced 0.94聽V after 10聽h experiments. The maximum power density was measured 23.3聽mW/cm² and reduced 19.8聽mW/cm².