Rechargeable, High Energy Density, Lithium-Air Batteries

Award Information
Agency:
Department of Defense
Branch
Army
Amount:
$69,959.00
Award Year:
2010
Program:
SBIR
Phase:
Phase I
Contract:
W56HZV-11-C-0044
Award Id:
97967
Agency Tracking Number:
A102-139-0898
Solicitation Year:
n/a
Solicitation Topic Code:
ARMY 10-139
Solicitation Number:
n/a
Small Business Information
141 W. Xenia Ave., PO Box 579, Cedarville, OH, 45314
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
173666215
Principal Investigator:
David Burton
Director/Manager of R&D
(937) 766-2020
dburton@apsci.com
Business Contact:
Max Lake
President
(937) 766-2020
mllake@apsci.com
Research Institute:
n/a
Abstract
Many defense systems such as silent watch, soldier power, unmanned vehicles, communications equipment, and directed energy weapons require portable power which limits the duration and capability of missions relying upon these systems. The DoD is therefore seeking energy storage devices with higher energy densities to extend mission duration and capability. Of all battery technologies currently available, batteries which rely upon lithium-air chemistry have the highest energy density. However, lithium-air battery performance is limited by issues with the metallic lithium anode and poor performance of the cathode. Applied Sciences, Inc. proposes overcome these issues through the use of a carbon nanofiber (CNF) negative electrode coated with amorphous silicon treated to form a stable Solid Electrolyte Interface (SEI), and a positive electrode with a rapid oxygen-exchange catalyst impregnated in a gas-diffusion electrode. The performance and characteristics of negative electrode have already been demonstrated, and this project applies it in the Li-air system. The positive electrode catalyst will be a transition-metal oxide with high activity for O-O bond cleavage and fast oxygen exchange. It is anticipated that the combination of the advanced anode with the proposed cathode will exceed the targeted energy density of 1000 AH/kg, and other performance metrics including cost.

* information listed above is at the time of submission.

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