Abstract
A type of micro-solid oxide fuel cell (SOFC) was designed and fabricated that uses self-supporting thin (∼20 μm thick) lanthanum-gallate-based electrolyte. With this configuration, the cofiring of electrolyte and anode was avoided, and high power density was obtained without using a buffer layer, which prevents the reaction between the electrolyte and Ni in the anode. The maximum power densities were 0.29, 0.56, and 0.93 W/cm 2 at 600, 650, and 700°C, respectively, comparable to those of the anode-supported SOFCs that use lanthanum-gallate electrolyte and a buffer layer. This structure has the advantages of both electrolyte and electrode-support types.
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