Telescope (HST) using 90 Ah batteries, and space station using 81 Ah batteries, Ni-H2 batteries capable of large cell sizing are the storage system of choice. In future applications for low power spacecraft and for the present limited cycle life applications associated with planetary missions, lithium ambient temperature batteries can be considered. For the high power spacecraft high temperature molten salt batteries will be considered. Much of the funding effort on the high temperature system has been directed at the Na-S solid electrolyte system. However, recent improvements in cycle life and specific energy of the upper plateau Li(Al)-FeS2 battery make it a viable candidate as an energy storage system in the future. Efforts to find advanced electrochemical systems with even higher specific energy are under way. JPL has recently performed a survey of the industry experts to identify candidate systems. The results, reported [7] at the Space Electrochemical Research and Technology (SERT) Conference in April 1989, were encouraging.
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