Electrochemical impregnation of sintered nickel structures with cadmium using constant current step and alternating-current pulse techniques. Interim report, Jan 1971--Jun 1974. [9. 8 Ah/in. /sup 3/, retained 80% of capacity after 750 cycles at 100% depth of discharge]
Cadmium electrodes, made by impregnation of sintered nickel plaques with cadmium hydroxide by three electrochemical techniques followed by formation to cadmium, can be used as efficient electrodes in nickel--cadmium secondary cells yielding capacities as high as 9.8 Ah/in./sup 3/ for aerospace secondary power. In flooded, negative limited cells electrodes made with a constant current step technique retained 80% of the original capacity after 750 cycles at 100% depth of discharge, over a varying temperature range from 21 to 43C. Alternating current pulse techniques, either symmetric or assymetric with respect to time, can yield electrodes with loadings of 2.1 to 2.3 g of Cd(OH)/sub 2/ per cubic centimeter of void. These electrodes show promise of being efficient for use in either flooded or starved electrolyte cells. (GRA)
- Research Organization:
- Spectrolab, Inc., Sylmar, Calif. (USA)
- OSTI ID:
- 7351730
- Report Number(s):
- AD-A-013931/1ST
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
250903* -- Energy Storage-- Batteries-- Materials
Components
& Auxiliaries
ANODES
CADMIUM COMPOUNDS
CADMIUM HYDROXIDES
ELECTRIC BATTERIES
ELECTROCHEMICAL CELLS
ELECTRODES
ELECTRONIC EQUIPMENT
ENERGY STORAGE SYSTEMS
FABRICATION
HYDROGEN COMPOUNDS
HYDROXIDES
IMPREGNATION
MEDIUM TEMPERATURE
METAL-METAL OXIDE BATTERIES
NICKEL-CADMIUM BATTERIES
OXYGEN COMPOUNDS
POWER SUPPLIES
PULSES
RELIABILITY
SINTERED MATERIALS
SPACECRAFT POWER SUPPLIES