Effects of Pretreatment Methods on Electrodes and SOFC Performance

Guo-Bin Jung, Li-Hsing Fang, Min-Jay Chiou, Xuan-Vien Nguyen, Ay Su, Win-Tai Lee, Shu-Wei Chang, I-Cheng Kao and Jyun-Wei Yu
Additional contact information
Guo-Bin Jung: Department of Mechanical Engineering & Fuel Cell Center, Yuan Ze University, Taoyuan 32003, Taiwan
Li-Hsing Fang: Department of Mechanical Engineering & Fuel Cell Center, Yuan Ze University, Taoyuan 32003, Taiwan
Min-Jay Chiou: Department of Mechanical Engineering & Fuel Cell Center, Yuan Ze University, Taoyuan 32003, Taiwan
Xuan-Vien Nguyen: Department of Mechanical Engineering & Fuel Cell Center, Yuan Ze University, Taoyuan 32003, Taiwan
Ay Su: Department of Mechanical Engineering & Fuel Cell Center, Yuan Ze University, Taoyuan 32003, Taiwan
Win-Tai Lee: Taiwan Power Company, New Taipei City 23847, Taiwan
Shu-Wei Chang: Taiwan Power Company, New Taipei City 23847, Taiwan
I-Cheng Kao: Taiwan Power Company, New Taipei City 23847, Taiwan
Jyun-Wei Yu: Department of Mechanical Engineering & Fuel Cell Center, Yuan Ze University, Taoyuan 32003, Taiwan

Energies, 2014, vol. 7, issue 6, 1-12

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) (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2014
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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