Study of Stable Cathodes and Electrolytes for High Specific Density Lithium-Air Battery

Future NASA missions require high specific energy battery technologies, greater than 400 Wh/kg. Current NASA missions are using "state-of-the-art" (SOA) Li-ion batteries (LIB), which consist of a metal oxide cathode, a graphite anode and an organic electrolyte. NASA Glenn Research Center i...

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Bibliographic Details
Published inNASA Center for AeroSpace Information (CASI). Misc. Resources
Main Authors Hernandez-Lugo, Dionne M, Wu, James, Bennett, William, Ming, Yu, Zhu, Yu
Format Web Resource
LanguageEnglish
Published Hampton NASA/Langley Research Center 24.05.2015
Subjects
Anodes
Cathodes
Electrochemical analysis
Electrolytes
Electrolytic cells
Flammability
Ionic liquids
Ions
Lithium-ion batteries
Metal air batteries
Missions
Morphology
Nonaqueous electrolytes
R&D
Rechargeable batteries
Research & development
Solvents
State of the art
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Summary:Future NASA missions require high specific energy battery technologies, greater than 400 Wh/kg. Current NASA missions are using "state-of-the-art" (SOA) Li-ion batteries (LIB), which consist of a metal oxide cathode, a graphite anode and an organic electrolyte. NASA Glenn Research Center is currently studying the physical and electrochemical properties of the anode-electrolyte interface for ionic liquid based Li-air batteries. The voltage-time profiles for Pyr13FSI and Pyr14TFSI ionic liquids electrolytes studies on symmetric cells show low over-potentials and no dendritic lithium morphology. Cyclic voltammetry measurements indicate that these ionic liquids have a wide electrochemical window. As a continuation of this work, sp2 carbon cathode and these low flammability electrolytes were paired and the physical and electrochemical properties were studied in a Li-air battery system under an oxygen environment.
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