NASA SBIR 2004 Solicitation

FORM B - PROPOSAL SUMMARY


PROPOSAL NUMBER: 04 E2.05-8310
SUBTOPIC TITLE: Energy Storage Technologies
PROPOSAL TITLE: 400 Wh/kg Secondary Battery

SMALL BUSINESS CONCERN (Name, E-mail, Mail Address, City/State/Zip, Phone)
Material Methods, LLC
3720 Campus Drive, Suite C
Newport Beach, CA 92660-2677
(949)474-4487

PRINCIPAL INVESTIGATOR/PROJECT MANAGER (Name, E-mail, Mail Address, City/State/Zip, Phone)
Alexander A Gorkovenko
agorkovenko@materialmethods.com
3720 Campus Drive, Ste B/C
Newport Beach, CA 92660-2677
(949)474-4487

TECHNICAL ABSTRACT (LIMIT 200 WORDS)
Summary
Lithium-ion battery technology will not provide significant breakthroughs beyond 200 Wh/kg. It will not provide adequate specific energy and cycle life for Earth Science missions. It will not enable the United States to reestablish its position of strategic technical advantage in portable energy storage. However, the next generation of secondary Li batteries is being developed in the US. It is based on lithium metal anodes and sulfur containing liquid cathodes. The sulfur-based cathode delivers a theoretical specific energy of 2450 Wh/kg, more than any other known cathode material of secondary cell. The Li-S battery needs advanced technology for improved stabilization of the Li anode in the corrosive environment of the liquid sulfur cathode. We propose a novel application of modern rocket fuel chemistry to create a self-healing, solid-electrolyte interface (SEI) layer. Li-S cells equipped with this robust passivation will stably perform at 400 Wh/kg level for ~ 300 cycles. At 200 Wh/kg a cycle life of ~ 1000 cycles is expected. The good low temperature performance and excellent rate capability features of Li-S cell will remain intact. These features are the next leap toward the advanced energy storage technologies required for Earth science observation platforms.

POTENTIAL NASA COMMERCIAL APPLICATIONS (LIMIT 100 WORDS)
Advanced energy storage technologies for Earth science observation platforms that include traditional spacecraft, airborne platforms, such as piloted and unpiloted aircraft and balloons, terrestrial platforms, micro-spacecraft, and surface penetrators.

POTENTIAL NON-NASA COMMERCIAL APPLICATIONS (LIMIT 100 WORDS)
Li/S will replace Li/Ion in majority of commercial applications requiring portable energy sources, such as cell phones, laptops and pen tabs computers, camcorders, digital cameras. Since rate capability of Li/S cell (liquid cathode versions) is much higher than LiIon and is comparable with aqueous electrolyte systems, it will also penetrate high rate applications markets such as power tools. Aqueous electrolyte-based batteries, such as Ni/Cd and Ni/MeH, currently dominate power tools market. It is expected that the developed Li/S technology will penetrate this market. In this case one Li/S battery will be replacing four (by weight basis) counterparts.