Insulating support for ion conductor stack

Details Insulating support for ion conductor stack Insulating support for ion conductor stack

1998-05-14

2000-09-12

Valentine, Donald R.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204258, 204265, 204266, 204279, 264 56, 501 5, 501 7, 501 9, C25B 904, C04B 3332, C03C 1004, C03C 1012

Patent

active

06117288&

ABSTRACT:
An electrochemical device for separating oxygen from an oxygen-containing gas comprises a plurality of planar ion-conductive solid electrolyte plates and electrically-conductive gas-impermeable interconnects assembled in a multi-cell stack. Electrically-conductive anode and cathode material is applied to opposite sides of each electrolyte plate. A gas-tight anode seal is bonded between the anode side of each electrolyte plate and the anode side of the adjacent interconnect. A biasing electrode, applied to the anode side of each electrolyte plate between the anode seal and the edge of the anode, eliminates anode seal failure by minimizing the electrical potential across the seal. The seal potential is maintained below about 40 mV and preferably below about 25 mV. A gas-tight seal is applied between the cathode sides of each electrolyte plate and the adjacent interconnect such that the anode and cathode seals are radially offset on opposite sides of the plate. The combination of biasing electrodes and offset seals is particularly effective in eliminating anode seal failure.

REFERENCES:
patent: 4193857 (1980-03-01), Bannister et al.
patent: 4547281 (1985-10-01), Wang et al.
patent: 4877506 (1989-10-01), Fee et al.
patent: 4885142 (1989-12-01), Suitor et al.
patent: 5021137 (1991-06-01), Joshi et al.
patent: 5045169 (1991-09-01), Feduska et al.
patent: 5061580 (1991-10-01), Wedlake et al.
patent: 5186806 (1993-02-01), Clark et al.
patent: 5204289 (1993-04-01), Moh
patent: 5269902 (1993-12-01), Khandkar et al.
patent: 5298138 (1994-03-01), Nachles et al.
patent: 5302258 (1994-04-01), Renlund et al.
patent: 5332483 (1994-07-01), Gordon
patent: 5338623 (1994-08-01), Nachlas et al.
patent: 5378345 (1995-01-01), Taylor et al.
patent: 5385874 (1995-01-01), Renlund et al.
patent: 5409371 (1995-04-01), Gordon
patent: 5441610 (1995-08-01), Runlund et al.
Headley, T.J. and Leohman, R. E., "Crystallization of a Glass-Ceramic by Epitaxial Growth", Journal of the American Ceramic Society, vol. 67, No. 9, pp. 620-625, 1984 (no month).
Richerson, D. W., Modern Ceramic Engineering, 2nd Edition, Marcel Dekker, Inc., New York, pp. 204, 205, 206, 228 (no date).
J. W. Suitor et al., "Oxygen Separation From Air Using Zirconia Solid Electrolyte Membranes", Proceedings of the 23rd Intersociety Energy Conversion Conference, vol. 2, ASME, New York, 1988, pp. 273-277 (no month).
D. J. Clark et al., "Separation of Oxygen by Using Zirconia solid Electrolyte Membranes", Gas Separation and Purification, 1992, vol. 6, No. 4, pp. 21-205 (no month).
C. J. Morrissey, "Stacking Oxygen Separation Cells", NASA Tech Brief, vol. 15, No. 6, Item #25, Jun, 1991.
C.J. Morrissey, "Thinner, More Efficient Oxygen Separation Cells", NASA Tech Brief, vol. 17, No. 4, Item #100, Apr. 1993.

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