High Efficiency Hybrid Energy Storage Utilizing High Power Density Ultracapacitors For Long Duration Balloon Flights, Phase I

Metadata Updated: July 17, 2020

FastCAP proposes to develop an ultra-high power density and high frequency ultracapacitor capable of surviving over the wide temperature range of -60C to 130C and exhibiting peak gravimetric and volumetric power density of 120kW/kg and 150kW/L respectively. FastCAP is planning to design and prototype a hybrid system comprised of the proposed ultracapacitor in parallel with a high energy density, rechargeable, lithium ion battery showing at least 50% volume reduction and 100% lifetime increase compared to stand-alone lithium batteries, meeting long duration research balloon requirements. During Phase I, FastCAP will evaluate both novel under-development and off-the-shelf lithium chemistries utilized in aerospace applications. The resulting hybrid battery-ultracapacitor (HBU) system combines the benefits of both technologies and will meet NASA's scientific balloon requirements of energy density, power density, shelf life, temperature, reliability and cycle life. This ultracapacitor can also be coupled to a piezoelectric generator, thanks to a high cut off frequency greater than 500Hz. The proposed HBU system will enable significant improvements in the design of power storage for terrestrial and planetary balloons, reducing their weight, volume, and complexity, while improving performance and relaxing design constraints on scarce candidate battery technologies. Compared to today's high-rate reserve and rechargeable battery technologies, the proposed hybrid system will provide much higher power and higher energy density, show tremendous improvement in cycle lifetime, and show reduced risk of explosion and thermal runaway associated with high-rate discharge, thanks to the power buffering role of the ultracapacitor within the HBU system. In applications where batteries are currently oversized for power handling, dramatic reductions in total energy storage system weight will be achieved by complementing those batteries with ultracapacitors.

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Metadata Created Date August 1, 2018
Metadata Updated Date July 17, 2020

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Harvested from NASA Data.json

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Resource Type Dataset
Metadata Created Date August 1, 2018
Metadata Updated Date July 17, 2020
Publisher Space Technology Mission Directorate
Unique Identifier TECHPORT_90152
Public Access Level public
Bureau Code 026:00
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Metadata Catalog ID https://data.nasa.gov/data.json
Schema Version https://project-open-data.cio.gov/v1.1/schema
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Harvest Object Id e66bd4dc-c636-49ab-96bc-d815f8b0bc67
Harvest Source Id 39e4ad2a-47ca-4507-8258-852babd0fd99
Harvest Source Title NASA Data.json
Data First Published 2016-12-01
Homepage URL https://techport.nasa.gov/view/90152
Data Last Modified 2020-01-29
Program Code 026:027
Source Datajson Identifier True
Source Hash 72069b0ddc4395318d58c2bbc3cad66f75de12f5
Source Schema Version 1.1

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