High-performance low-temperature solid oxide fuel cells using thin proton-conducting electrolyte with novel cathode

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• 作者：Limin Zhang^a ; ^{zhangliminsxnu@gmail.com} ; ^{zhanglimin76@gmail.com} ; Weishen Yang^b ; ^{yangws@dicp.ac.cn}
• 关键词：Proton conductor ; Thin-film electrolyte ; Low temperature ; Cathode
• 刊名：International Journal of Hydrogen Energy
• 出版年：2012
• 期刊代码：42_03603199
• 类别：ch
• 出版时间：May, 2012
• 卷：37
• 期：10
• 页码：8635-8640
• 文件大小：709 K

摘要

We have fabricated BaCe_0.8Gd_0.2O_3鈭?em>未 (BCGO) thin films with thickness in the range of 5-10聽渭m over substrates composed of Ce_0.8Gd_0.2O_1.9 (CGO)-NiO using a colloidal spray deposition method. A perovskite-type BaZr_0.2Co_0.4Fe_0.4O_3鈭?em>未 (BZCFO) was employed as a novel cathode material. The performances of solid oxide fuel cells were investigated from 450聽掳C to 600聽掳C. The fuel cell with the BCGO film of 9聽渭m in thickness showed maximum power outputs of 237, 192, 136 and 89聽mW聽cm^鈭? at 600, 550, 500 and 450聽掳C, respectively. The impedance measurements at open circuit conditions showed the polarization resistances of the electrode were about 0.25 and 1.00聽惟聽cm² at 600 and 500聽掳C, respectively. The low interfacial resistances indicated that the BZCFO was a promising cathode material for low-temperature proton-conducing solid oxide fuel cells.