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This work studies the ionic conductivity of nanosized Gd-, Sm-, and Y-doped ceria prepared by the infiltration/impregnation method. The nanoparticles were deposited onto porous pure ceria substrates via infiltration-heating processes, and the conductivity was determined with the electrochemical impedance spectroscopy (EIS) using the conductive model for infiltrated phases. The conductivity of the...
Microstructure, interfacial resistance, and activation energy for composite cathodes consisting of 50 wt% (La 0.85 Sr 0.15 ) 0.9 MnO 3- δ (LSM) and 50 wt% Sm 0.2 Ce 0.8 O 1.90 (SDC) were studied for intermediate-temperature solid oxide fuel cells based on SDC electrolytes. Microstructure...
The effects of a transient external voltage application on the bioanode performance of microbial fuel cells (MFCs) inoculated with mixed cultures were investigated. Different positive and negative external voltages were applied to a set of bioanodes. The MFCs under +1, −1, and −5V voltage applications achieved higher current densities than the control during the start-up period. The MFC exposed to...
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