NASA STTR 2019-I Solicitation

Proposal Summary

 19-1- T15.03-4336
 Electrified Aircraft Propulsion Energy Storage
 Solid State Li-S Battery Based on Novel Polymer/Mineral Composite
Name:  Chemtronergy, LLC
Name:  University of Utah
Street:  3619 West 1987 South
Street:  135 South 1460 East, Room 412
City:  Salt Lake City
City:  Salt Lake City
State/Zip:  UT 84104-4904
State/Zip:  UT 84112-0114
PHONE:  (801) 981-9997
PHONE:  (801) 581-6386

Principal Investigator (Name, E-mail, Mail Address, City/State/Zip, Phone)

Dr. John Bi
3619 West 1987 South Salt Lake City, UT 84104 - 4904
(801) 981-9997

Business Official (Name, E-mail, Mail Address, City/State/Zip, Phone)

Dr. Gege Tao
3619 West 1987 South Salt Lake City, UT 84104 - 4904
(801) 981-9997
Estimated Technology Readiness Level (TRL) :
Begin: 2
End: 3
Technical Abstract (Limit 2000 characters, approximately 200 words)

Li–S/Li-O2 batteries have great potential to meet requirements of energy storage systems for Electrified Aircraft propulsion applications. However, due to the need for oxygen gas storage and supply systems, the complicit balance of plant significantly decreases both gravimetric and volumetric energy density of Li-O2 battery systems. Li-S battery with a theoretical specific energy of 2600 Wh/kg is one of the highest known using non-gaseous constituents. Before expand their market potential, however, one main obstacle – “rapid capacity fade on cycling” due to shuttling effect and volumetric change, has to be resolved. In phase I, Chemtronergy and the University of Utah propose to develop an all solid-state Li-S battery (ASSLSB) based on a novel highly conductive thin polymer/mineral composite electrolyte developed by UU, a high performance sulfur cathode, and an industrial roll-to-roll battery manufacturing process. Successful development of the solid-state composite electrolytes and high performance sulfur cathode will eliminate the use of flammable organic substances in the electrolyte and will suppress the polysulfide dissolution and lithium dendrite formation, making the Li-S batteries safer and durable.

Potential NASA Applications (Limit 1500 characters, approximately 150 words)

Through improving cycle life and safety, the proposed all solid state Li-S battery will address the key limitation for space applications. With high safety and long cycle life, ASSLSB would meet multi-use or cross platform space energy storage applications, and result in significant mass and volume savings and operational flexibility, including Electrical Aircraft propulsion (EAP), EVA space suits and tools, human example, lunar and martian landers, science platforms and surface solar arrays.

Potential Non-NASA Applications (Limit 1500 characters, approximately 150 words)

The proposed ASSLSB can be widely used in consumer electronic, electric vehicles and charging stations, tourist coaches, yachts, wind and solar energy storage power, traffic signals, solar hybrid street lighting, UPS power supply, home energy storage, coal miner, disaster relief emergency, communication base stations, telecommunications, etc.

Duration: 13

Form Generated on 06/16/2019 22:57:50