Electrolyte and Electrode Materials of Intermedium-temperature SOFC Prepared by Glycine-nitrate Process

Chem. J. Chinese Universities ›› 2002, Vol. 23 ›› Issue (7): 1227.

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Electrolyte and Electrode Materials of Intermedium-temperature SOFC Prepared by Glycine-nitrate Process

JI Yuan¹, LIU Jiang¹, HE Tian-Min¹, CONG Li-Gong¹, SU Wen-Hui^1,2,3

1. Center for Rareearth Solid State Physics and Solid State Physics, State Key Lab of Inorganic Synthesis and Preparative Chemistry, Jilin University, Changchun 130023, China;
2. Center for Condensed Matter Science and Technology, Harbin Institute of Technology, Harbin 150001, China;
3. International Center for Materials Physics, Chinese Academy of Sciences, Shenyang 110015, China

Received:2001-09-08 Online:2002-07-24 Published:2002-07-24

Abstract

Abstract: By using a new combustion synthesis method, the glycine nitrate process, all the nano-size materials were prepared for a single solid oxide fuel cell(SOFC), in which(CeO₂) x (SmO_1.5)_1-x (x=0.9, 0.85, 0.8) were used as the electrolytes, La_0.6Sr_0.4Fe_0.8Co_0.2O₃with 50% samaria doped ceria(SDC) was selected as the cathode material, and a SDC-NiO-Ni composite powder was used as the anode material. In this study, the performance of the SOFCwas obtained up to 750 ℃, the maximum power density of 0.104 W/cm²and a short circuit current density of 500 mA/cm²of the cell was achieved at 750 ℃ by using (CeO₂)_0.9(SmO_1.5)_0.1electrolyte. The inferior SOFCperformance of the (CeO₂)_0.8(SmO_1.5)_0.2electrolyte was due to the physical discontinuity at the clearly grain boundary and could effectively introduce barriers to ionic conduction in reducing atmosphere, while the (CeO₂)_0.9(SmO_1.5)_0.1electrolyte′s boundary tends to be merged.

Key words: Glycine nitrate process, Intermedium temperature SOFC, (CeO₂)_0.9(SmO_1.5)_0.1, Cathode, Anode

CLC Number:

TrendMD:

JI Yuan, LIU Jiang, HE Tian-Min, CONG Li-Gong, SU Wen-Hui. Electrolyte and Electrode Materials of Intermedium-temperature SOFC Prepared by Glycine-nitrate Process[J]. Chem. J. Chinese Universities, 2002, 23(7): 1227.

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Electrolyte and Electrode Materials of Intermedium-temperature SOFC Prepared by Glycine-nitrate Process

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