effects of pretreatment methods on electrodes and sofc performance
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2014
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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.
| Reference Key |
jung2014energieseffects
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|---|---|
| Authors | ;Guo-Bin Jung;Li-Hsing Fang;Min-Jay Chiou;Xuan-Vien Nguyen;Ay Su;Win-Tai Lee;Shu-Wei Chang;I-Cheng Kao;Jyun-Wei Yu |
| Journal | acs combinatorial science |
| Year | 2014 |
| DOI |
10.3390/en7063922
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| URL | |
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