Patent ID: 7250232
Filing Date: 2007-07-31
Classification: B82Y,H01M,Y02E,Y02P

Abstract:
1. A method for making an electrolyte material for a solid acid fuel cell, the method comprising: providing a solid acid material; dissolving the solid acid material in water to form a saturated aqueous solution; injecting the saturated aqueous solution into a solvent in which the solid acid is not soluble to form an injection solution, wherein the solvent is selected from the group consisting of methanol, ethanol, isopropanol, benzene, toluene or acetone; allowing the injection solution to stand for at least one day to allow the solid acid material to settle in the solvent, creating a settled solution; decanting the settled solution with a slightly polar solvent selected from the group consisting of methanol, ethanol, isopropanol and butanol to isolate the solid acid particles.