A novel method was established to enhance the study of electrocatalytic behavior of powdered catalysts. An ultrathin layer of fine graphite powdered catalyst was intercalated into the surface layer of a soft conductive plastic sheet made from acetylene black and PTFE binder. This technique was successfully used in preparing catalytically active electrodes, i.e. for rotating disk and rotating ring-disk electrode systems. Powdered semiconductors used as catalysts in photoreactions can also be studied in the same manner.

Key words: CATALYST, ELECTROCHEMICAL ANALYSIS, ROTATION ELECTRODES, DISK ELECTRODES, ELECTRO-CATALYSIS, POWDER, PHOTOELECTROCHEMICAL ELECTRODES