Lithium-ion Energy Storage at Very Low Temperatures

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$69,995.00
Award Year:
2006
Program:
SBIR
Phase:
Phase I
Contract:
NNJ06JD70C
Award Id:
77533
Agency Tracking Number:
054520
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
111 Downey Street, Norwood, MA, 02602
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
076603836
Principal Investigator:
Dharmasena Peramunage
Principal Investigator
(781) 769-9450
pera@eiclabs.com
Business Contact:
David Rauh
President
(781) 769-9450
drauh@eiclabs.com
Research Institution:
n/a
Abstract
Li-ion batteries with specific energy >180 Wh/kg, calendar life (>15years), and a wide operating temperature range (-60oC to 60oC) are crucial for the deployment of exploration vehicles such as rovers, landers, and penetraters as well as for low temperature burst power communication. The sub-ambient conductivity and liquid range of present rechargeable Li-ion battery electrolytes severely limit low temperature use. Co-solvents freezing as low as -132oC and Li salts with highly delocalized anions, enabling high degree of ionic dissociation in low dielectric environments provide us with a unique opportunity to develop non aqueous electrolytes for the low temperature with ionic conductivities well above 10-4 Scm-1. Our aim is to use these novel electrolytes as a direct substitute for the present electrolytes without affecting Li-ion battery performance or life during normal operation and access as least half the rated capacity at -60oC and 1/2C discharge rate. Working in collaboration with a leading developer of Li-ion batteries in Phase I, our low temperature electrolyte formulations will be evaluated in Li test cells containing anodes and cathodes used in commercial scale battery manufacture. In Phase II, electrolyte composition will be further optimized and prototype batteries will be fabricated and tested for performance.

* information listed above is at the time of submission.

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