Patent ID: 11908636
Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC C  H  Y | IPC H

Claim 0:
1. A method for making a gas diffusion layer for an electrode, the method comprising:
processing quartz wool with water in a blender to form a suspension;
filtering the suspension to remove the water, to form a cake of entangled quartz fibers;
annealing the cake of the entangled quartz fibers without complete melting of the entangled quartz fibers to obtain a porous quartz felt having a pore size greater than 1 μm, the annealing being at 1250° C. to 1350° C. with an annealing plateau time of 5 minutes to 3 hours; and
coating the porous quartz felt with a conductive material.