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Development of long life lightweight nickel-cadmium cells and batteriesThe paper describes the development of a high-specific energy Ni-Cd cell for a lightweight battery. After preliminary cycling tests on laboratory and commercial cells, a cell was produced that features electrochemically impregnated positive and negative electrodes, a single terminal, and increased amount of electrolyte. This cell weighed an average of 948 g and had a measured specific energy of over 50 Wh/kg at a C/2 discharge to 1.0 V. The epoxy graphite case capable of withstanding internal pressures in excess of 300 psig represents a 35% weight reduction from a lightweight 0.30 mm Ni-Cd case. A pack of these cells was cycled at 70% maximum depth of discharge beyond 10 simulated geosynchronous orbit-eclipse seasons, and high end-of-charge voltages were obtained. A prototype battery consisting of 14 such cells was fabricated and has a measured specific energy of 46 Wh/kg.
Document ID
19790025997
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Ritterman, P. F.
(TRW Defense and Space Systems Group Redondo Beach, Calif., United States)
Bogner, R. S.
(California Institute of Technology, Jet Propulsion Laboratory, Pasadena Calif., United States)
Date Acquired
August 9, 2013
Publication Date
January 1, 1978
Subject Category
Spacecraft Propulsion And Power
Meeting Information
Meeting: Intersociety Energy Conversion Engineering Conference
Location: San Diego, CA
Start Date: August 20, 1978
End Date: August 25, 1978
Accession Number
79A10010
Distribution Limits
Public
Copyright
Other

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