Non-gassing nickel--cadmium battery electrodes and cells. Final report, 15 June 1971--15 June 1972. [25 Ah, 10 Wh/lb]
The concept of a negative-limited nongassing nickel--cadmium battery was demonstrated by constructing and testing practical-size experimental cells of approximately 25 Ah capacity. These batteries operated in a gas-free manner and had measured energy densities of 10 to 11 Wh/lb. Thirty cells were constructed for extensive testing. Some small cells were tested for over 200 cycles at 100 percent depth. For example, a small cell with an electrodeposited cadmium active mass on a silver screen still had 55 percent of its theoretical capacity (initial efficiency was 85 percent). There was no evidence of deterioration of gassing properties with cycling of the nickel electrodes. The charge temperature was observed to be the most critical variable governing nickel electrode gassing. This variable was shown to be age dependent. Four types of cadmium electrodes were tested: an electrodeposited cadmium active mass on a cadmium of silver substrate, a porous sintered silver substrate-based electrode, and a Teflon-bonded pressed cadmium electrode. The electrodeposited cadmium mass on a silver screen was found to be the best all-around electrode from a performance point of view and from the point of view of manufacturing them in a size required for a 25-Ah-size battery.
- Research Organization:
- Gould, Inc., Mendota Heights, Minn. (USA)
- OSTI ID:
- 7212618
- Report Number(s):
- N-72-33056; NASA-CR-128355
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
NICKEL-CADMIUM BATTERIES
ELECTRODES
TESTING
ANODES
ELECTRODEPOSITION
SINTERED MATERIALS
TEFLON
TEMPERATURE DEPENDENCE
TIME DEPENDENCE
DEPOSITION
ELECTRIC BATTERIES
ELECTROCHEMICAL CELLS
ELECTROLYSIS
ENERGY STORAGE SYSTEMS
FLUORINATED ALIPHATIC HYDROCARBONS
HALOGENATED ALIPHATIC HYDROCARBONS
LYSIS
METAL-METAL OXIDE BATTERIES
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC POLYMERS
PETROCHEMICALS
PETROLEUM PRODUCTS
PLASTICS
POLYETHYLENES
POLYMERS
POLYOLEFINS
SURFACE COATING
250903* - Energy Storage- Batteries- Materials
Components
& Auxiliaries
250901 - Energy Storage- Batteries- Design & Development