Nano-Structured Carbon/Silicon Composite for High Energy, Long Cycle Life Lithium-Ion Batteries

Award Information
Agency:
Department of Energy
Branch
n/a
Amount:
$749,868.00
Award Year:
2007
Program:
SBIR
Phase:
Phase II
Contract:
DE-FG02-06ER84580
Award Id:
80530
Agency Tracking Number:
80120S06-I
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
15 Acorn Park, Cambridge, MA, 02140
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
111046152
Principal Investigator:
DavidOfer
Dr
(617) 498-5051
ofer.david@tiaxllc.com
Business Contact:
ReneeWong
Ms
(617) 498-5655
wong.renee@taixllc.com
Research Institute:
n/a
Abstract
Battery-powered electric vehicles (EVs) require energy storage devices with high specific energy, but currently available lithium-ion systems can not meet the energy and power goals for EVs. Lithium-ion cells are needed that provide at least 150 Wh/kg, 230 Wh/l, 300 W/kg, and 460 W/l; have a life of 1000 cycles at 80 percent depth of discharge; have a calendar life of at least 10 years; and are made with materials costing less than $10/kg. To meet this need, this project will develop a high-capacity, long-cycle-life, nanostructured, silicon/carbon composite anode material, made using low cost materials and processes. In Phase I, the synthesis of the nano-scaled silicon material was demonstrated. A model was developed to demonstrate the potential impact of nanostructured silicon/carbon composite anodes on Li-ion cell energy; it was shown that the composite could enable the above-listed performance targets to be attained. In Phase II, the composite of nano-scaled silicon with carbon will be developed, and its performance will be demonstrated in scaled-up Li-ion batteries. Commercial Applications and Other Benefits as described by the awardee: The proposed low cost material should have broad commercial applicability in small portable power lithium-ion batteries for consumer electronics and power tools, as well as in large lithium-ion batteries for electric vehicles and hybrid electric vehicles.

* information listed above is at the time of submission.

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