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A solid oxide fuel cell 10 including a plurality of sheet-like components including a fuel electrode, an electrolyte 28, and an air electrode 26, sandwiched between interconnector sheet members 14,16, wherein the improvement comprises one of the components having exteriorly projecting inorganic whis

A solid oxide fuel cell 10 including a plurality of sheet-like components including a fuel electrode, an electrolyte 28, and an air electrode 26, sandwiched between interconnector sheet members 14,16, wherein the improvement comprises one of the components having exteriorly projecting inorganic whiskers 80 interengaged with inorganic whiskers projecting from another component, the interengagement serving to mechanically anchor the one and other components together. The anchored components can be an electrode and an electrolyte, an electrode and the interconnecting support structure, or the triplex layer as a unit and the interconnecting support structure.

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1. In a solid oxide fuel cell including a triplex sheet having laminar layers of fuel electrode, electrolyte, and air electrode, the sheet being sandwiched between support layers, the improvement comprising: at least two of said layers having inorganic whiskers projecting from the surface of one

1. In a solid oxide fuel cell including a triplex sheet having laminar layers of fuel electrode, electrolyte, and air electrode, the sheet being sandwiched between support layers, the improvement comprising: at least two of said layers having inorganic whiskers projecting from the surface of one layer and interengaged with the other layer, said interengagement serving to anchor said two layers together. 2. The improved fuel cell of claim 1, wherein the whiskers are made from a silicon compound. 3. The improved fuel cell of claim 1, wherein the whiskers have a length in the range of about 100-400 microns and the layers are about 500-1000 microns thick. 4. The improved fuel cell of claim 1, wherein the whiskers are substantially uniformly distributed in the layers. 5. The improved fuel cell of claim 4, wherein the whiskers occupy between about five and ten volume percent of the layer. 6. The improved fuel cell of claim 1, wherein each of the fuel electrode and air electrode have projecting whiskers interengaged with projecting whiskers on a common electrolyte. 7. The improved fuel cell of claim 1, wherein each support layer is in the form of a sheet having a surface containing a multiplicity of projecting inorganic whiskers, and wherein the electrode layers of the stack have projecting inorganic whiskers interengaging the whiskers on the support layer. 8. The improved fuel cell of claim 1, wherein the whiskers are made from a refractory inorganic material. 9. The improved fuel cell of claim 1, wherein the whiskers are distributed substantially only on the exterior surface of the layers. 10. In a solid oxide fuel cell including a plurality of sheet like components including a fuel electrode, an electrolyte, and an air electrode, disposed between support member components, the improvement comprising: one of said components having exteriorly projecting inorganic whiskers interengaged with another component, said interengagement serving to mechanically anchor the one and other components together. 11. The improved fuel cell of claim 10, wherein said one component is an electrode and said other component is a support member. 12. The improved fuel cell of claim 10, wherein said one component is an electrode and the other component is the electrolyte. 13. The improved fuel cell of claim 10, wherein the fuel and air electrodes are laminated in contact with a common electrolyte therebetween, to form a triplex sheet, and wherein said one component is the triplex sheet and the other component is a support member. 14. The improved fuel cell of claim 13, wherein each of the electrodes and electrolyte have exteriorly projecting inorganic whiskers which interengage on the contact surfaces of the laminar sheet. 15. The improved fuel cell of claim 10, wherein the other component has exteriorly projecting whiskers and the projecting whiskers from the one and other component are interengaged. 16. A process for fabricating laminar sheets for a solid oxide fuel cell having a plurality of sheet members joined together as a stack, comprising the steps of: forming a first plastic composite material into a first layer, the first layer including a multiplicity of inorganic whiskers projecting from the surface of the first layer; forming a second plastic composite material into a second layer, the second layer having a multiplicity of inorganic whiskers projecting from the surface of the second layer; and joining and curing the layers together to form a rigid laminar sheet, wherein a plurality of the whiskers of the first layer are physically interengaged with whiskers of the second layer to serve as anchors between the layers. 17. The process of claim 16, wherein the step of forming each plastic layer includes mixing ingredients in a blender and the inclusion of said whiskers includes the step of depositing and mixing the whiskers in the blender with said ingredients. 18. The process of claim 16, wherein the step of forming each plastic layer includes the step of strip calender rolling and the inclusion of said whiskers includes the step of depositing the whiskers on the surface of the layer immediately after the step of strip calender rolling the layer. 19. The process of claim 16, wherein the step of forming each plastic layer includes the step of slip casting one layer onto another layer, and the inclusion of said whiskers includes the step of adding the whiskers to the composite materials before the respective layers are cast onto one another. 20. A process for fabricating a solid oxide fuel cell having plurality of sheet members joined together as a stack, comprising the steps of, forming a plurality of individual sheets, depositing an adhesive slurry on at least one of the sheets; distributing a multiplicity of inorganic fibers in the slurry; positioning said one sheet into contact with another sheet such that the slurry is in mutual contact with the sheets; curing the slurry to adhesively bond the sheets together such that the adhesive bond is augmented by the interengagement of fibers which have one end joined to one of the sheets and the other end interengaged with a different fiber which is joined to the other sheet. 21. The process of claim 20, wherein the step of depositing an adhesive slurry is preceded by the step of distributing a multiplicity of inorganic fibers in said one and said another said sheets. 22. The process of claims 21, wherein the step of distributing fibers in the sheets includes distributing some fibers so that one portion is imbedded in the sheet and another portion projects from the sheet. 23. The process of claim 22 wherein the step of curing includes interengaging the projecting portions of the fibers between sheets.