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

Effects of Pretreatment Methods on Electrodes and SOFC Performance

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Received: 29 April 2014; in revised form: 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)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: 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.
Keywords: pretreatment; anode-supported cell; triple phase boundary (TPB); solid oxide fuel cell (SOFC)
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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.

AMA 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(6):3922-3933.

Chicago/Turabian Style

Jung, Guo-Bin; Fang, Li-Hsing; Chiou, Min-Jay; Nguyen, Xuan-Vien; Su, Ay; Lee, Win-Tai; Chang, Shu-Wei; Kao, I-Cheng; Yu, Jyun-Wei. 2014. "Effects of Pretreatment Methods on Electrodes and SOFC Performance." Energies 7, no. 6: 3922-3933.

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