Advanced Neutrally Buoyant Rechargeable Batteries Based on Ceramic Electrolyte Separators

Award Information
Agency:
Department of Defense
Branch
Navy
Amount:
$69,746.00
Award Year:
2007
Program:
STTR
Phase:
Phase I
Contract:
N00014-07-M-0298
Award Id:
83445
Agency Tracking Number:
N074-022-0015
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
2425 South 900 West, Salt Lake City, UT, 84119
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
089500540
Principal Investigator:
JohnWatkins
Senior Scientist
(801) 978-2182
jwatkins@ceramatec.com
Business Contact:
RaymondMiller
CFO/Secretary
(801) 978-2176
rkm@ceramatec.com
Research Institute:
RUTGERS UNIV.
Jun J Xu
Dept. of Materials Science
and Engineering
Piscataway,, NJ, 8854
(732) 445-5606
Nonprofit college or university
Abstract
A pressure tolerant, neutrally buoyant, high-energy density battery is proposed that utilizes a Li+ conducting, solid-electrolyte separator, LiSICON. The LiSICON ceramic is fabricated using state of the art tape casting methods which allows composite structures of porous and dense layers ~100mm thick. The layered structure increase mechanical strength and decrease interfacial and bulk resistances. The high-energy cathode material, amorphous MnO2 or nano-crystalline LiMn1/3Ni1/3Co1/3O2, allow a predicted energy density >400 Whr/kg for the overall battery. The use of a lightweight lithium metal anode results in a battery with an estimated specific gravity approaching 1. The pressure tolerant battery design allows the case to preferentially deform to compensate for increasing pressure and also accounts for the internal volume change during battery discharge. The solid electrolyte separator prevents lithium dendrites from shorting the battery during recharge significantly increasing the safety margin, inherent in alkali metal batteries.

* information listed above is at the time of submission.

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