Effect of Sintering Temperature and Applied Load on Anode-Supported Electrodes for SOFC Application

Xuan-Vien Nguyen, Chang-Tsair Chang, Guo-Bin Jung, Shih-Hung Chan, Wilson Chao-Wei Huang, Kai-Jung Hsiao, Win-Tai Lee, Shu-Wei Chang and I-Cheng Kao
Additional contact information
Xuan-Vien Nguyen: Department of Mechanical Engineering & Fuel Cell Center, Yuan Ze University, Taoyuan 320, Taiwan
Chang-Tsair Chang: Taoyuan Aerotropolis Company, Taoyuan 320, Taiwan
Guo-Bin Jung: Department of Mechanical Engineering & Fuel Cell Center, Yuan Ze University, Taoyuan 320, Taiwan
Shih-Hung Chan: Department of Mechanical Engineering & Fuel Cell Center, Yuan Ze University, Taoyuan 320, Taiwan
Wilson Chao-Wei Huang: Department of Mechanical Engineering & Fuel Cell Center, Yuan Ze University, Taoyuan 320, Taiwan
Kai-Jung Hsiao: Department of Mechanical Engineering & Fuel Cell Center, Yuan Ze University, Taoyuan 320, Taiwan
Win-Tai Lee: Taiwan Power Company, New Taipei City 100, Taiwan
Shu-Wei Chang: Taiwan Power Company, New Taipei City 100, Taiwan
I-Cheng Kao: Taiwan Power Company, New Taipei City 100, Taiwan

Energies, 2016, vol. 9, issue 9, 1-13

Abstract: Anode-supported cells are prepared by a sequence of hot pressing and co-sintering processes for solid oxide fuel cell (SOFC) applications. Commercially available porous anode tape (NiO/YSZ = 50 wt %/50 wt %), anode tape (NiO/YSZ = 30 wt %/70 wt %), and YSZ are used as the anode substrate, anode functional layer, and electrolyte layer, respectively. After hot pressing, the stacked layers are then sintered at different temperatures (1250 °C, 1350 °C, 1400 °C and 1450 °C) for 5 h in air. Different compressive loads are applied during the sintering process. An (La,Sr)MnO 3 (LSM) paste is coated on the post-sintered anode-supported electrolyte surface as the cathode, and sintered at different temperatures (1100 °C, 1150 °C, 1200 °C and 1250 °C) for 2 h in air to generate anode-supported cells with dimensions of 60 × 60 mm 2 (active reaction area of 50 × 50 mm 2 ). SEM is used to investigate the anode structure of the anode-supported cells. In addition, confocal laser scanning microscopy is used to investigate the roughness of the cathode surfaces. At sintering temperatures of 1400 °C and 1450 °C, there is significant grain growth in the anode. Furthermore, the surface of the cathode is smoother at a firing temperature of 1200 °C. It is also found that the optimal compressive load of 1742 Pa led to a flatness of 168 µm/6 cm and a deformation of 0.72%. The open circuit voltage and power density of the anode-supported cell at 750 °C were 1.0 V and 178 mW·cm ?2 , respectively.

Keywords: pretreatment; anode-supported cell; solid oxide fuel cell (SOFC); impedance spectra; warpage; applied load; roughness; cell shape (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: 2016
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (5)

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