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This paper describes a manometric method for the determination of chemical diffusion coefficients from gas/solid equilibration kinetics for electrode materials of the type (La,Sr)(Mn,Fe,Co)O 3 . The equilibration kinetics was monitored by measurements of the p(O 2 ) changes during a reaction between oxygen and the electrode material involving both oxidation and reduction experiments...
This paper reports the results of chemical diffusion coefficient measurements for oxygen in (La,Sr)(Mn,Co)O 3 and (La,Sr)(Mn,Fe)O 3 using a manometric method in the temperature range of 773 to 1023 K. It was observed that the addition of Fe or Co into (La 4x Sr x ) 1-y MnO 3 results in a substantial increase of the chemical diffusion coefficient...
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