The requirement for primary batteries with very high specific energy, low self-discharge/long calendar life performance, wide temperature operation and radiation tolerance has prompted the evaluation by NASA of commercially available options, as well as the development of new components and cell designs. This includes higher specific energy battery chemistries such as Li/CFx and Li/CFx-MnO2, which provide for a higher capacity per unit mass at moderate rates, relative to Li/SO2 and Li/SOCl2 chemistries used in previous missions. Current efforts to evaluate the effects of radiation and storage on these primary battery chemistries will be discussed in relation to future NASA needs.
The work described here was carried out at the Jet Propulsion Laboratory, California Institute of Technology under contract with the National Aeronautics and Space Administration (NASA).
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