Abstract
An improved porous electrode is described which is a convenient basis for a comparative study of electrocatalytic activity of noble metals and/or for investigations of electrocatalytic processes on gases. The suggested technique makes use of porous graphite disks having a part of their surface covered with a thin layer of catalyst kept in position by means of a thin network of sintered Teflon drops. Such an electrode is to be disposed horizontally with its upper catalyst side kept in the atmosphere of the concerned gas, the remaining part being immerged in the solution. Solution by capillarity moves upward to moisten catalyst. Teflon prevents solution from reaching a too high level which would submerge the catalyst. This way the triple contact electrode‐solution‐gas is complete and efficient, and both solution level and graphite porosity are not critical factors. Polarization curves and charge‐discharge curves have been determined in order to evaluate performances of that porous electrode in various electrochemical systems and processes.
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