Development of Medium-Temperature Solid Oxide Fuel Cells and CO2 and H2O Co-Electrolysis Cells in Estonia

Friday, 31 July 2015: 08:20
Alsh (Scottish Exhibition and Conference Centre)
E. Lust, K. Tamm, G. Nurk (Institute of Chemistry, University of Tartu), P. Möller (University of Tartu), I. Kivi, R. Kanarbik (Institute of Chemistry, University of Tartu), and A. Heinsaar (University of Tartu)
Various micro/mesoporous activated complex oxides as cathodes or andodes, bilayered Ce0.9Gd0.1O2-d|Zr0.92Y0.08O2-d electrolyte and various Ni-cermet and Ni-free anodes or cathodes have been designed and tested for high power density solid oxide fuel cells (1.5...1.6 W/cm2 (1073 K) and solid oxide electrolyzers. FIB-TOF-SIMS, FIB-SEM-EDX, HTXRD, BET, AFM and electrochemical impedance methods have been applied for analysis of the materials and completed single cells. Influence of porosity distribution (BET and 3D FIB-SEM data), cell potential and fuel composition on power density and fuel conversion efficiency has been demonstrated.