Methods of sealing solid oxide fuel cells

Details Methods of sealing solid oxide fuel cells Methods of sealing solid oxide fuel cells

H - Electricity

01

M

H01M 8/04 (2006.01) H01M 8/10 (2006.01)

Patent

CA 2529333

To form the solid oxide fuel cell (10), porous, compliant and conducting anode and cathode buffers (22, 24) are disposed between the cell and anode and cathode flow fields (12, 14) respectively. Marginal gaps (30) between the anode and cathode flow fields and margins of the cell are formed in excess of the thickness of glass based seal tape (32) disposed between the flow field margins and the cell margins. Upon compressing the flow fields and thus the buffer layers, the seal tapes are engaged by the flow fields and cell margins. Heat is applied to reach seal working temperatures to melt the glass-based seal which, upon cooling, solidifies or hardens to form hermetic seals along the fuel cell margins.

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