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Nanomaterials-Based
Electrodes for High Charge Rate Energy Storage Devices of HEVs--Nanopowder Enterprises, Inc., 120 Centennial
Avenue, Suite 106, Piscataway, NJ 08854-3900;
732-885-5909
Dr.
Amit Singhal, Principal Investigator, amitsinghal@nanopowderenterprises.com
Dr.
Gary S. Tompa, Business Official, gstompa@aol.com
DOE
Grant No. DE-FG02-02ER83519
Amount:
$100,000
Advanced
electrochemical devices with high power density and fast charge rate capability
(less than 10 minutes) are needed for hybrid electric vehicles. Existing
electrode materials and battery configurations are not capable of providing the
necessary performance at low cost. This
project will develop a new class of nanostructured tungsten oxide anodes with
high electrical conductivity, and implement it in an asymmetric hybrid energy
storage device. This device, with a
lithium-intercalating anode such as tungsten oxide, a carbon cathode, and a
non-aqueous electrolyte, will have high rate capabilities with a discharge time
as small as 3 minutes, and a charge time as small as 6 minutes for a long cycle life
(> 1000). In Phase I, a novel
synthesis process will be used to produce nanostructured tungsten oxide powders
that are intimately mixed with ultrafine carbon particles, achieving high
electronic conductivity in the anodes. The
nanocomposite powders will be tested in a hybrid cell configuration for their
electrochemical properties.
Commercial Applications and Other Benefits as described by the awardee: Asymmetric hybrid energy storage devices utilizing nanostructured tungsten oxide anodes should satisfy the emerging needs of propulsion systems for hybrid electric vehicles (HEVs) where both fast discharge and charge rates are desired. These batteries are also suited for other commercial applications, such as power tools and uninterrupted power supplies.