Physico-chemical analysis of rechargeable aerospace cells
Conference
·
OSTI ID:382665
- National Aeronautics and Space Administration, Greenbelt, MD (United States). Goddard Space Flight Center
- COMSAT Labs., Clarksburg, MD (United States)
Rechargeable aerospace batteries such as nickel-cadmium (Ni-Cd) and nickel-hydrogen (Ni-H{sub 2}) are subjected to a detailed physical and chemical analysis to confirm the suitability of their design, determine whether the manufacturing process is under control, and explain anomalous performance features. The results of a number of cell analyses are presented, including the variation of cadmium precharge, overcharge protection, cadmium migration, swelling, porosity, and active material utilization. The results point to a decrease in positive plate utilization with storage and decrease in negative plate utilization, and overcharge protection, and increase in cadmium migration with cycling for Ni-Cd cells. In the case of Ni-H{sub 2} cells, the positive plate active material utilization tends to be high when the plaque porosity is 75.6 to 78.8%.
- OSTI ID:
- 382665
- Report Number(s):
- CONF-960112--; ISBN 0-7803-2994-5
- Country of Publication:
- United States
- Language:
- English
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