Gasket for fuel cells
AssigneeFlexitallic Investments, Inc.
InventorsMarkus Rautanen, Olli Himanen, Jari Kiviaho, John Hoyes
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Abstract
A gasket for sealing two mating surfaces of a fuel cell is described. The gasket has a core layer comprising exfoliated vermiculite. The core layer is interposed between a first and second coating layer, the said coating layers each comprising glass, glass-ceramic and/or ceramic material. Methods for producing gaskets according to the invention are also described. A solid oxide cell or a solid oxide cell component comprising one or more of the gaskets; use of the gasket to improve sealing properties in a solid oxide cell; and a method of producing a solid oxide cell or of sealing a solid oxide cell comprising incorporating at least one of the gaskets into the solid oxide cell are also defined.
Claims30
A gasket for sealing two mating surfaces of a fuel cell comprising a core layer comprising exfoliated vermiculite and first and second coating layers said core layer interposed between the said first and second coating layers, the said coating layers each comprising glass, glass-ceramic and/or ceramic material.
A method for producing a gasket, comprising;
- a. applying a glass or glass-ceramic coating layer onto each of two opposed surfaces of an exfoliated vermiculite gasket core layer to form a coated gasket;
- b. locating the coated gasket in a fuel cell between mating surfaces to be sealed.
A method for producing a gasket, comprising;
- a. applying a glass or glass-ceramic coating layer onto each of two mating surfaces to be sealed to form coated mating surfaces;
- b. locating an exfoliated vermiculite gasket core layer between the coated mating surfaces;
- c. mating the coated surfaces and interposed gasket core layer together to form the gasket between the mating surfaces.
Dependencies are inferred from the claim text.