Abstract
In order to develop new energy conversion technique, that is, electric power and hydrogen multi generation system by partial oxidation reaction of methane source using thermo nuclear power, sol-gel and spin coating techniques were employed to make nano ordered thin solid electrolyte film of Ce0.8Sm0.2O1.9, which is expected to exhibit high ion conductivity and low loss of self-electric resistivity in the temperature range of 1073-1273 K. The Ce0.8Sm0.2O1.9 solid electrolyte thin film was investigated to obtain its fundamental properties, and the following conclusions were derived;(1) Nano ordered electrolyte thin film of Ce0.8Sm0.2O1.9 was synthesized by the combination of sol-gel and spin coating techniques on sapphire substrate from Ce(NO3)36H2O and Sm(NO3)36H2O in ethylene glycol solution.(2) High crystal perfection and high density of Ce0.8Sm0.2O1.9 nano ordered thin electrolyte film was achieved by firing at 1273 K.(3) The highest ion conductivity of high temperature electrolytes in the order of 1.4 S·cm−1 at 1273 K was achieved by the formation of the Ce0.8Sm0.2O1.9 nano thin electrolyte film. This would be world record of the high temperature electrolytes.
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