Device Packaging 2019

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Low Temperature Lithium Ion Batteries for Mars Missions
Keywords: Low Temperature, Lithium Ion , Electrolytes
Lithium-ion batteries provide a wide range of operating temperatures, especially at sub-zero temperatures, compared to state of practice aqueous systems, and hence are an attractive option for planetary surface missions, e.g., Mars Landers and rovers. JPL has been researching on Li-ion battery electrolytes, to extend their operation to temperatures as low -60oC, combined with good resilience to warm temperatures, up to 60oC. Early developments in this pursuit resulted in an electrolyte that enables operation over -20 to +40oC, which contributed to the success of the Mars Exploration Rovers. Various significant events in the development and flight infusion of this technology into Mars Rovers and Landers will be described here.
Dr. Ratnakumar Bugga , Senior Member Technical Staff
Jet Propulsion Laboratory
Pasadena, CA

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