GAS-DIFFUSION PLATE FOR CHEMICAL CURRENT SUPPLY

FIELD: electrochemistry; manufacture of air-metal current supplies. SUBSTANCE: gas-diffusion plate has water-repelling layer, active layer, and current lead; water-repelling layer has following composition: 41-70 mass percent of polyethylene and carbon material containing 50-100 mass percent of grap...

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Bibliographische Detailangaben
Hauptverfasser:	TUMANOV V.L, GRUZDEV A.I
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS ELECTRICITY PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Beschreibung
Zusammenfassung:	FIELD: electrochemistry; manufacture of air-metal current supplies. SUBSTANCE: gas-diffusion plate has water-repelling layer, active layer, and current lead; water-repelling layer has following composition: 41-70 mass percent of polyethylene and carbon material containing 50-100 mass percent of graphite; active layer that has in its composition polyethylene and activated carbon is doped in addition with graphite in proportion of 20-60 mass percent of activated carbon content. Fractional composition of graphite introduced in water-repelling layer ranges between 0.5 and 100 mcm and particle size of graphite introduced in active layer may vary between 5 and 500 mcm. EFFECT: reduced alkali penetrability and enhanced electric conductivity of carbon-containing electrode layers. 5 cl, 3 ex