Preparation of La/Co/Ni-based anode catalyst for biogas-fueled solid oxide fuel cells

• Published in: Journal of electroceramics Vol. 35; no. 1-4; pp. 75 - 80
• Main Authors: Nguyen, Ngoc Thi Quynh, Trieu, Tuan Anh, Yoon, Hyon Hee
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.12.2015; Springer Nature B.V
• Subjects: Ceramics; Characterization and Evaluation of Materials; Chemistry and Materials Science; Composites; Crystallography and Scattering Methods; Electrochemistry; Glass; Materials Science; Natural Materials; Optical and Electronic Materials; Coking; Reforming catalyst; Biogas; Anode catalyst layer; Solid oxide fuel cell
• ISSN: 1385-3449; 1573-8663
• DOI: 10.1007/s10832-015-9994-9

A new type of bilayered-anode for application in biogas-fueled solid oxide fuel cells (SOFCs) was investigated. The bilayered-anode consisted of lanthanum- and cobalt-doped nickel oxide mixed with Sc 2 O 3 -stabilized ZrO 2 electrolyte material (LaCoNi-ScSZ) as a functional catalyst layer mainly for the reforming reaction and NiO-ScSZ as an active anode layer mainly for the electrochemical reaction. The cell performance was characterized by recording I - V curves and impedance spectra. The SOFC featuring the LaCoNi-ScSZ functional catalyst anode layer exhibited a power density of 0.32 W/cm 2 when operated under a humidified synthetic biogas (60 % CH 4 and 40 % CO 2 ) at 700 °C. The presence of LaCoNi-ScSZ functional catalyst afforded a high coking resistance, and thus the cell was stable when operated under the synthetic biogas at 700 °C for 45 h.