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Lightweight nickel electrode for nickel hydrogen cells and batteriesThe nickel electrode was identified as the heaviest component of the nickel hydrogen (NiH2) battery. The NASA Lewis Research Center is developing nickel electrodes for NiH2 battery devices which will be lighter in weight and have higher energy densities when cycled under a low Earth orbit regime at deep depths of discharge. Lightweight plaques are first exposed to 31 percent potassium hydroxide for 3 months to determine their suitability for use as electrode substrates from a chemical corrosion standpoint. Pore size distribution and porosity of the plaques are then measured. The lightweight plaques examined are nickel foam, nickel felt, nickel plastic and nickel plated graphite. Plaques are then electrochemically impregnated in an aqueous solution. Initial characterization tests of the impregnated plaques are performed at five discharge levels, C/2, 1.0 C, 1.37 C, 2.0 C, and 2.74 C rates. Electrodes that passed the initial characterization screening test will be life cycle tested. Lightweight electrodes are approximately 30 to 50 percent lighter in weight than the sintered nickel electrode.
Document ID
19880029404
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Britton, Doris L.
(NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
August 13, 2013
Publication Date
January 1, 1986
Subject Category
Energy Production And Conversion
Meeting Information
Meeting: International Power Sources Symposium
Location: Cherry Hill, NJ
Country: United States
Start Date: June 9, 1986
End Date: June 12, 1986
Accession Number
88A16631
Distribution Limits
Public
Copyright
Other

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