Evaluation of BaZr0.1Ce0.7Y0.2O3-delta electrolyte prepared by carbonate precipitation for a mixed ion-conducting SOFC
- Authors
- Konwar, Dimpul; Ngoc Thi Quynh Nguyen; Yoon, Hyon Hee
- Issue Date
- 21-Sep-2015
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Keywords
- Carbonate coprecipitation; Proton conductor; Solid-oxide fuel cell; Ionic conductivity; Biogas
- Citation
- INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, v.40, no.35, pp.11651 - 11658
- Journal Title
- INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
- Volume
- 40
- Number
- 35
- Start Page
- 11651
- End Page
- 11658
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/10141
- DOI
- 10.1016/j.ijhydene.2015.05.056
- ISSN
- 0360-3199
- Abstract
- Potential of BaZr0.1Ce0.7Y0.2O3-delta (BZCY) electrolyte prepared by ammonium carbonate coprecipitation was investigated for application in solid oxide fuel cells (SOFCs). An 8 mu m thick BZCY electrolyte layer was deposited on a porous Ni-BZCY anode. A slurry mixture of BZCY-LaSr3Co1.5Fe1.5O10-delta (LSCF) was used as the cathode. The ionic conductivities of the BZCY electrolyte were 5.0 x 10(-2) and 1.8 x 10(-2) S cm(-1) at 750 and 550 degrees C, respectively, and the conduction activation energy was 0.42 eV. A fabricated single cell exhibited excellent maximum power densities of 1.39 Wcm(-2) at 750 degrees C and 0.72 Wcm(-2) at 600 degrees C using hydrogen as fuel. Further the cell was also exposed to CH4 (70%) and CO2 (30%) in the anode side as fuel. Under biogas the maximum power densities were 0.79 W cm(-2) at 750 degrees C and 0.28 W cm(-2) at 600 degrees C. The characteristics of the electrolyte were quantified by measuring the total conductivities across a range of temperatures. Copyright (C) 2015, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
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