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Some Recent Studies with the Solid-Ionomer Electrochemical CapacitorGiner, Inc. has developed a high-energy-density, all-solid-ionomer electrochemical capacitor, completely free of liquid electrolyte. The novel features of this device include 1) a three-dimensional metal oxide-particulate-ionomer composite electrode structure, and 2) a unitized repeating cell element. The composite electrode structures are bonded to opposite sides of a thin sheet of a solid proton-conducting ionomer membrane and form an integrally bonded membrane and electrode assembly (MEA). Individual MEAs can be stacked in series as bipolar elements to form a multiple cell device. The discharge characteristics and energy storage properties of these devices are described. Typical capacitance measured for a unit cell is 1 F/cm(exp 2). Life testing of a multicell capacitor on an intermittent basis has shown, that over a 10,000 hour period, the capacitance and resistance of the cell has remained invariant. There has been no maintenance required on the device since it was fabricated. Other multicell units of shorter life duration have exhibited similar reliable performance characteristics. Recent work has focused on increasing the capacitance of the unitized structure and improving the low-temperature characteristics. The approaches and experimental results will be presented. Some possible advanced NASA applications for these unique all-solid-ionomer devices will be discussed.
Document ID
19910023248
Acquisition Source
Glenn Research Center
Document Type
Conference Paper
Authors
S Sarangapani
(Giner (United States) Newton, Massachusetts, United States)
J Forchione
(Giner (United States) Newton, Massachusetts, United States)
A Griffith
(Giner (United States) Newton, Massachusetts, United States)
A B LaConti
(Giner (United States) Newton, Massachusetts, United States)
R Baldwin
(Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 6, 2013
Publication Date
September 1, 1991
Publication Information
Publication: Journal of Power Sources: Proceedings of the Third Space Electrochemical Research and Technology Conference
Publisher: Elsevier
Volume: 36
Issue: 3
Issue Publication Date: December 1, 1991
ISSN: 0378-7753
e-ISSN: 1873-2755
Subject Category
Energy Production And Conversion
Meeting Information
Meeting: 3rd Space Electrochemical Research and Technology (SERT) Conference
Location: Cleveland, OH
Country: US
Start Date: April 9, 1991
End Date: April 10, 1991
Sponsors: Lewis Research Center
Accession Number
91N32562
Funding Number(s)
CONTRACT_GRANT: NSF ISI-90-60142
CONTRACT_GRANT: N00014-88-C-0391
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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