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Title: Drying an ultracapacitor

Patent ·
OSTI ID:1531435
; ;

A multilayer cell is provided that comprises two solid, nonporous current collectors, two porous electrodes separating the current collectors, a porous separator between the electrodes and an electrolyte occupying pores in the electrodes and separator. The mutilayer cell is electrolyzed to disassociate water within the cell to oxygen gas and hydrogen gas. A vacuum is applied to the cell substantially at the same time as the electrolyzing step, to remove the oxygen gas and hydrogen gas. The cell is then sealed to form a ultracapacitor substantially free from water.

Research Organization:
General Electric Co., Schenectady, NY (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
38-83CH10093
Assignee:
General Electric Company (Schenectady, NY)
Patent Number(s):
6,152,970
Application Number:
09/162,529
OSTI ID:
1531435
Resource Relation:
Patent File Date: 1998-09-29
Country of Publication:
United States
Language:
English

References (11)

Polarizable electrode body and method for its making patent April 1988
Organic electrolyte cell patent March 1999
Capacitor with a double electric layer cell stack patent May 1995
Method to fabricate a reliable electrical storage device and the device thereof patent November 1995
Electric double-layer capacitor patent February 1989
Electric double layer capacitor and method for producing the same patent September 1992
High surface area nitride, carbide and boride electrodes and methods of fabrication thereof patent October 1997
Hexasubstituted guanidinium salts and ultracapacitors employing them as electrolytes patent March 1998
Electrolytic process useful for the electrolysis of water patent March 1981
Method for electrolyzing water patent December 1996
Electric double layer capacitor patent August 1992

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