Nanostructured MnO2-Based Cathodes for Li-Polymer Batteries

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$69,892.00
Award Year:
2001
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Agency Tracking Number:
NASA1157
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Nanopowder Enterprises Inc.
Suite 106, 120 Centennial Ave.,, Piscataway, NJ, 08854
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Dr. Singhal
Senior Scientist
(732) 885-1088
amitsin@aol.com
Business Contact:
Dr.Gary S Tompa
President
(732) 885-5909
gstompa@aol.com
Research Institution:
n/a
Abstract
The objective of the proposed program is to develop high capacity nanostructured LixMnO2 cathode materials with a layered structure, which is stable over a wide range of lithiation. Layered LixMnO2 is a very attractive cathode material for aerospace applications because of its high theoretical capacity ( 300 Ah/kg), low cost and low toxicity. In the proposed approach, doped MnO2 nanoparticles will be produced by our patented vapor phase process. MnO2 sheets will be stabilized by an electrochemically active cation, which will restrict the movement of Mn ions. The unique feature of our vapor phase process is its ability to produce ¿kinetically stabilized¿ nanoparticles, which lead to exceptional energy densities, e.g. 900 Wh/kg in case of our V2O5 nanoparticles. In Phase I, electrochemical properties of cathodes fabricated using doped-MnO2 nanoparticles will be evaluated by working with our industrial partner. These materials will lead to Li-polymer batteries with high energy densities (> 250 Wh/kg) and a long cycle life (> 250). In Phase II, prototype batteries will be fabricated and tested for performance, along with optimization and scaling of the powder synthesis process. In Phase III, the newly developed materials will be implemented in commercial batteries.

* information listed above is at the time of submission.

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