Process for improving diffusion electrodes

Claim 1

A PROCESS FOR IMPROVING A POROUS CARBON ELECTRODE HAVING MAJOR PORES WHOSE AVERAGE DIAMETER IS ABOVE ABOUT 0.2 X 104 A. AND A MINOR PORES OF LESSER AVERAGE DIAMETER FOR USE IN A FUEL CELL EMPLOYING AN AQUEOUS ACIDIC ELECTROLYTE AND OXYGEN GAS SO AS TO BRING SAID ELECTRODE, SAID ELECTROLYTE AND GAS INTO THREE PHASE CONTACT, WHICH COMPRISES FLOODING SAID ELECTRODE WITH A C6 TO C7 LIQUID PARAFFIN, SELECTIVELY REMOVING SAID PARAFFIN FROM SAID MAJOR PORES BY AIR BLOWING OF SAID ELECTRODE, PASSING WATER VAPOR THROUGH SAID MAJOR PORES AND ADSORBING A FILM OF WATER THEREON, PASSING AN ESSENTIALLY ANHYDROUS STREAM OF NITROGEN CONTAINING AN ALKLYCHLOROSILANE COMPOUND THROUGH SAID MAJOR PORES UNTIL ESSENTIALLY ALL OF SAID FILM HASREACTED WITH SAID COMPOUND LEAVING A CONTINUOUS SILICONE FILM BONDED TO THE WALLS OF SAID MAJOR PORES AND RAPIDLY HEATING SAID ELECTRODE TO ABOUT 305* TO 4000 F. UNTIL SAID PARAFFIN IS REMOVED FROM SAID MINOR PORES.