NASA STTR 2008 Solicitation


PROPOSAL NUMBER: 08-1 T3.01-9909
RESEARCH SUBTOPIC TITLE: Technologies for Space Power and Propulsion
PROPOSAL TITLE: High capacity and high voltage composite oxide cathode for Li-ion batteries

NAME: NEI Corporation NAME: University of Florida
STREET: 201 Circle Drive N., Suite 102/103 STREET: 339 Weil Hall, PO Box 116550
CITY: Piscataway CITY: Gainesville
STATE/ZIP: NJ  08854 - 3723 STATE/ZIP: FL  32611 - 6500
PHONE: (732) 868-3141 PHONE: (352) 392-9447

PRINCIPAL INVESTIGATOR/PROJECT MANAGER (Name, E-mail, Mail Address, City/State/Zip, Phone)
Jinxiang Dai
201 Circle Drive N., Suite 102/103
Piscataway, NJ 08854 - 3723
(732) 868-3141

Expected Technology Readiness Level (TRL) upon completion of contract: 1 to 2

TECHNICAL ABSTRACT (Limit 2000 characters, approximately 200 words)
NEI Corporation and University of Florida propose to develop a mixed metal oxide cathode that is a composite of two and three dimensional structures. At the atomic level, the crystal structure is expected to be both open (for fast Li-ion intercalation/diffusion) and stable (for good reversibility). The cathode materials developed in this program are expected to have high capacity and high rate capability, as well as long cycle life. Additionally, the crystal structure of the proposed material is expected to be stable over a wide temperature range upon Li-ion deintercalation, without oxygen evolution. This will allow the Li-ion cells to operate at high energy and power levels without compromising on safety. The target specific capacity of the proposed cathode is >200 mAh/g with a nominal working voltage of 4.8V, which gives out >960 Wh/kg specific energy. A unique feature of the proposed program is that it integrates theoretical and experimental work to enable a new generation of high capacity and high voltage cathode materials: the composition range and structure will be determined utilizing first principles calculation techniques developed by our STTR partner at University of Florida, and NEI Corp. will produce the cathode materials using its scalable and low cost process. The structure, composition, particle morphology and electrochemical performance will then be determined. The objective of the Phase I STTR program is to demonstrate the feasibility of a new high capacity and high voltage cathode material for rechargeable Li-ion batteries. In Phase II, the composition and morphology of the powders will be optimized, and integrated into large format prototype Li-ion batteries by working in partnership with a battery manufacturer(s). The objective will be to design and fabricate battery packs that meet the functional performance requirements set by NASA.

POTENTIAL NASA COMMERCIAL APPLICATIONS (Limit 1500 characters, approximately 150 words)
Currently, Li-ion batteries are utilized only for low-cycle life space applications, but reliable and safe Li-ion batteries with improved cycle and calendar life, high energy density and good low temperature performance are needed for astronaut equipment and solar powered landers, rovers, propulsion, and human outposts. With NEI's cathode materials, a high performance Li-ion battery will be produced to meet NASA requirements.

POTENTIAL NON-NASA COMMERCIAL APPLICATIONS (Limit 1500 characters, approximately 150 words)
Currently available commercial Li-ion batteries do not adequately meet the requirements of electronic appliances, such as cell phones, laptop computers, power tools, sensors, and remote controllers. The cathode materials developed in this program will increase the overall performance of Li-ion batteries used in these applications. Others applications for the materials developed here include Electric vehicles (EV), hybrid electric vehicles, power backups, and alternative power generation, such as solar panels, wind turbines, which need batteries to store the generated energy.

NASA's technology taxonomy has been developed by the SBIR-STTR program to disseminate awareness of proposed and awarded R/R&D in the agency. It is a listing of over 100 technologies, sorted into broad categories, of interest to NASA.

Energy Storage

Form Generated on 11-24-08 11:59