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Energies 2014, 7(6), 3922-3933; doi:10.3390/en7063922

Effects of Pretreatment Methods on Electrodes and SOFC Performance

Department of Mechanical Engineering & Fuel Cell Center, Yuan Ze University, Taoyuan 32003, Taiwan
Taiwan Power Company, New Taipei City 23847, Taiwan
Author to whom correspondence should be addressed.
Received: 29 April 2014 / Revised: 1 June 2014 / Accepted: 17 June 2014 / Published: 23 June 2014
(This article belongs to the Special Issue Reacting Transport Phenomena in Solid Oxide Fuel Cells)
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Commercially available tapes (anode, electrolyte) and paste (cathode) were choosen to prepare anode-supported cells for solid oxide fuel cell applications. For both anode-supported cells or electrolyte-supported cells, the anode needs pretreatment to reduce NiO/YSZ to Ni/YSZ to increase its conductivity as well as its catalytic characteristics. In this study, the effects of different pretreatments (open-circuit, closed-circuit) on cathode and anodes as well as SOFC performance are investigated. To investigate the influence of closed-circuit pretreatment on the NiO/YSZ anode alone, a Pt cathode is utilized as reference for comparison with the LSM cathode. The characterization of the electrical resistance, AC impedance, and SOFC performance of the resulting electrodes and/or anode-supported cell were carried out. It’s found that the influence of open-circuit pretreatment on the LSM cathode is limited. However, the influence of closed-circuit pretreatment on both the LSM cathode and NiO/YSZ anode and the resulting SOFC performance is profound. The effect of closed-circuit pretreatment on the NiO/YSZ anode is attributed to its change of electronic/pore structure as well as catalytic characteristics. With closed-circuit pretreatment, the SOFC performance improved greatly from the change of LSM cathode (and Pt reference) compared to the Ni/YSZ anode. View Full-Text
Keywords: pretreatment; anode-supported cell; triple phase boundary (TPB); solid oxide fuel cell (SOFC) pretreatment; anode-supported cell; triple phase boundary (TPB); solid oxide fuel cell (SOFC)

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This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Jung, G.-B.; Fang, L.-H.; Chiou, M.-J.; Nguyen, X.-V.; Su, A.; Lee, W.-T.; Chang, S.-W.; Kao, I.-C.; Yu, J.-W. Effects of Pretreatment Methods on Electrodes and SOFC Performance. Energies 2014, 7, 3922-3933.

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