High Energy Density Li-ion Polymer Batteries With Nanocomposite Cathodes

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$600,000.00
Award Year:
2004
Program:
SBIR
Phase:
Phase II
Contract:
NNG04CA24C
Award Id:
63595
Agency Tracking Number:
023531
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
201 Circle Drive North, Suite 102-103, Piscataway, NJ, 08854
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
042939277
Principal Investigator:
Amit Singhal
Principal Investigator
(732) 868-1906
asinghal@neicorporation.com
Business Contact:
Ganesh Skandan
Chief Executive Officer
(732) 868-1906
gskandan@neicorporation.com
Research Institute:
n/a
Abstract
The energy density and the average operating voltage of Li-ion batteries can be enhanced by utilizing new cathode chemistries that have significantly higher capacity and higher open circuit voltage than those of start-of-the-art LiCoO2 cathode. The proposed program focuses on developing novel nanocomposites with a theoretical energy density of 800 Wh/kg, which is more than 60% higher than that of the practical energy density of LiCoO2. In Phase I, we developed a process of producing nanocomposite cathode powders. The crystallite size of particles was in the range of 50 ? 300 nm. It was demonstrated that cathodes made of the nanocomposite powder were electrochemically active and exhibited high first charge capacity, > 85% of the theoretical capacity. Working with rechargeable Li-ion battery manufacturers and leading researchers, we will demonstrate that it is possible to produce stable and high energy density nanocomposite cathodes by manipulating the structure and the composition. Additionally, we will fabricate prototype Li-ion polymer cells consisting of cathodes made of the nanocomposite powders. Processing methods will be developed for producing large cathode tapes with nanostructured powders. The powder synthesis process will be optimized for producing kilogram quantities. The overall goal of the Phase II program is to achieve Li-ion polymer cells with an energy density of 200 Wh/kg for a large number of discharge-charge cycles ( 1000) and an average voltage of > 4.4 V.

* information listed above is at the time of submission.

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