초록

Flexible graphite sheet having embedded ceramic fibers extending from its surfaces into the sheet to increase the permeability of the sheet to resin which is grooved by mechanical deformation into a shape useful as a flow field plate in fuel cells.

대표청구항 ▼

[ What is claimed is:] [1.] A fluid flow field plate for use in a fuel cell in the form of a single unitary resin impregnated flexible graphite sheet having opposite planar outer surfaces, said flexible graphite sheet having embedded therein a dispersion of a plurality of needle-shaped ceramic fiber

[ What is claimed is:] [1.] A fluid flow field plate for use in a fuel cell in the form of a single unitary resin impregnated flexible graphite sheet having opposite planar outer surfaces, said flexible graphite sheet having embedded therein a dispersion of a plurality of needle-shaped ceramic fiber particles which are non-reactive with flexible graphite and stable at temperatures up to 2500.degree. F. in an amount of about 1.5 to 30% by weight, said needle-shaped ceramic particles extending into said graphite sheet from at least one of said planar outer surfaces to provide channels for containing said resin, and one of said planar outer surfaces having formed therein a continuous fluid flow channel which has a fluid inlet and a fluid outlet to respectively receive and exhaust a fluid fuel or oxidant.