Synthesis and evaluation of (La0.6Sr0.4)(Co0.2Fe0.8)O-3 (LSCF)-Y0.08Zr0.92O1.96 (YSZ)-Gd0.1Ce0.9O2-delta (GDC) dual composite SOFC cathodes for high performance and durability
SCIE
SCOPUS
- Title
- Synthesis and evaluation of (La0.6Sr0.4)(Co0.2Fe0.8)O-3 (LSCF)-Y0.08Zr0.92O1.96 (YSZ)-Gd0.1Ce0.9O2-delta (GDC) dual composite SOFC cathodes for high performance and durability
- Authors
- Ko, HJ; Myung, JH; Lee, JH; Hyun, SH; Chung, JS
- Date Issued
- 2012-11
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Abstract
- This paper investigates a (La0.6Sr0.4)(Co0.2Fe0.8)O-3 (LSCF)-Y0.16Zr0.92O1.96 (YSZ)-Gd0.1Ce0.9O2-delta (GDC) dual composite cathode to achieve better cathodic performance compared to an LSWGDC-YSZ dual composite cathode developed in previous research. To synthesize the structures of the LSCF/GDC-YSZ and LSCF/YSZ-GDC dual composite cathodes, nano-porous composite cathodes containing LSCF, YSZ, and GDC were prepared by a two-step polymerizable complex (PC) method which prevents the formation of YSZ-GDC solid solution. At 800 degrees C, the electrode polarization resistance of the LSCF/YSZ-GDC dual composite cathode showed to be significantly lower (0.075 Omega cm(2)) compared to that of a commercial LSCF-GDC cathode (0.195 Omega cm(2)), a synthesized LSCF/GDC-YSZ dual composite cathode (0.138 Omega cm(2)), and an LSWGDC-YSZ dual composite cathode (0.266 Omega cm(2)) respectively. Moreover, the Ni-YSZ anode-supported single cell containing the LSCF/YSZ-GDC dual composite cathode achieved a maximum power density of 1.24 W/cm(2) and showed excellent durability without degradation under a load of 1.0 A/cm(2) over 570 h of operation at 800 degrees C. Copyright (c) 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
- Keywords
- Solid oxide fuel cell; Composite cathode; Polymerizable complex method; Y0.08Zr0.92O1.96 Gd0.1Ce0.9O2-delta; (La0.6Sr0.4)(Co0.2Fe0.8)O-3; OXIDE FUEL-CELLS; ELECTROLYTE; STABILITY
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/15613
- DOI
- 10.1016/J.IJHYDENE.2012.08.099
- ISSN
- 0360-3199
- Article Type
- Article
- Citation
- INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, vol. 37, no. 22, page. 17209 - 17216, 2012-11
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