Novel Electrolytes for -100°C Lithium Battery Applications

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: NNJ06JD72C
Agency Tracking Number: 053376
Amount: $70,000.00
Phase: Phase I
Program: SBIR
Awards Year: 2006
Solicitation Year: 2005
Solicitation Topic Code: X3.02
Solicitation Number: N/A
Small Business Information
Covalent Assoc., Inc.
10 State St, Woburn, MA, 08101-6820
DUNS: 040191686
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Konstantin Tikhonov
 Principal Investigator
 (781) 938-1140
 tikhonov@covalentassociates.com
Business Contact
 Linda Morrison
Title: Business Official
Phone: (781) 938-1140
Email: morrison@covalentassociates.com
Research Institution
N/A
Abstract
NASA requires advanced high power primary lithium batteries for ultra low temperature applications. The key component that limits the performance at low temperature is the battery electrolyte. Proof-of-concept experiments have shown that Covalent's new non-aqueous electrolyte formulations greatly enhance low temperature primary battery performance while preserving its long shelf life. At temperatures as low as -100oC, our new electrolyte demonstrates superior transport properties due to minimal triple ion formation. Accelerated storage tests revealed no voltage delay indicative of a stable passive film formed on the lithium anode. When coupled with a high energy density cathode material such as carbon monofluoride (CFx), our new electrolyte formulations will enable primary lithium primary performance over a broad spectrum of ultra low temperature applications. Specifically, Li/CFx batteries incorporating the new Covalent electrolytes will deliver more than 30% of their room temperature capacity at temperatures as low as -100oC at practical discharge rates.

* information listed above is at the time of submission.

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