Solid electrolyte capacitor and method of making

Details Solid electrolyte capacitor and method of making Solid electrolyte capacitor and method of making

1990-08-03

1991-09-10

Griffin, Donald A.

Electricity: electrical systems and devices

Electrolytic systems or devices

Double layer electrolytic capacitor

29 2503, H01G 900

Patent

active

050478990

ABSTRACT:
A technique is disclosed for supplying backup power by providing a solid-state electrochemical capacitor with a layer of solid electrolyte material composed of RbAg.sub.4 I.sub.5, a layer of anode material composed of carbon and RbAg.sub.4 I.sub.5 adjoining a first surface of the electrolyte material, and a layer of cathode material composed of carbon and RbAg.sub.4 I.sub.5 adjoining a second surface of the electrolyte material. A current is supplied to charge the anode of the capacitor structure to a voltage in the range from 0.50 volts to 0.66 volts to cause storage of charge in the capacitor structure in both a double layer capacitance mode and a pseudo capacitance mode. The charged up capacitor is used to supply a backup voltage to a CMOS memory. The capacitor structure is made by compressing the electrolyte, the anode, and the cathode together to produce molecular bonding without binder material, using compression forces of approximately 80,000 psi. Refractory metal contacts coupling the anode and cathode to a charging circuit and a discharging circuit.

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"Applications of Halogenide Solid Electrolytes", by B. B. Owens, J. E. Oxley, and A. F. Sammells, pp. 67-104.
"A Solid State Electrochemical Capacitor", by J. E. Oxley, Abstract No. 175, pp. 446-447.
"Solid State Energy Storage Device", by J. E. Oxley, Session on Secondary Batteries, pp. 20-23.
"Solid Electrolyte Batteries", by B. B. Owens, pp. 28-30.

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