Electrocatalytic properties of La-manganites prepared by low temperature synthesis

Abstract

38-42<span style="font-size:11.0pt;line-height:115%; font-family:" calibri","sans-serif";mso-ascii-theme-font:minor-latin;mso-fareast-font-family:="" "times="" new="" roman";mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font:="" minor-latin;mso-bidi-font-family:"times="" roman";mso-ansi-language:en-us;="" mso-fareast-language:en-us;mso-bidi-language:ar-sa"="">Pure and strontium substituted lanthanum manganites were prepared by a sol-gel route and their electrocatalytic properties, in the form of film electrodes, were studied in relation to.O2 evolution. Results showed that the catalytic activity of new oxides in 1 M KOH at 25°C was 25-100 times higher than ones obtained by a conventional ceramic method. The Tafel slopes were ranging 90-114 mV decade and the reaction order in OH- concentration was found to be approximately one. Strontium substitutions have been observed to be greatly beneficial from electrocatalysis stand-point.</span

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This paper was published in NOPR.

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