Patent ID: 8440367
Filing Date: 2013-05-14
Classification: C03C,H01M,Y02E,Y02P,Y10T

Abstract:
1. A solid oxide fuel cell comprising: a frame; a ceramic electrolyte sheet comprising a first surface and an opposing second surface, wherein a plurality of positive air electrodes are attached to the first surface and a plurality of negative fuel electrodes are attached to the second surface; and a seal connecting at least a portion of the frame to at least a portion of the ceramic electrolyte sheet; wherein the seal comprises a material capable of preventing a transfer of charge, during fuel cell operation, between both the portion of the frame and the portion of the ceramic electrolyte sheet connected to the seal, said material being situated between the portion of the frame and the portion of the ceramic electrolyte sheet connected to the seal, wherein the frame is peripherally attached to the ceramic electrolyte sheet and provides support to the ceramic electrolyte sheet, wherein the material capable of preventing a transfer of charge comprises a glass frit comprising a ceramic phase and a non-crystalline residual glass phase, and wherein the residual glass phase is substantially free of alkali ions, and the alkali ions are bound in the ceramic phase.