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7 - Electrochemical Energy Storage and Conversion for Electrified Aircraft

Published online by Cambridge University Press:  11 May 2022

By
Ajay Misra
Edited by
Kiruba Haran ,
Nateri Madavan  and
Tim C. O'Connell
Kiruba Haran
Affiliation:
University of Illinois, Urbana-Champaign
Nateri Madavan
Affiliation:
NASA Aeronautics Mission Directorate, NASA
Tim C. O'Connell
Affiliation:
P.C. Krause & Associates
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Summary

The viability of electrified aircraft propulsion (EAP) architectures, from small urban air mobility vehicles to large single-aisle transport aircraft, depends almost exclusively on their energy storage requirements. Because energy storage increases with specific energy and power density, these metrics strongly influence the adoption of EAP architectures. This chapter provides an overview of electrochemical energy storage and conversion systems for EAP, including batteries, fuel cells, supercapacitors, and multifunctional structures with energy storage capability. An overview of today’s state-of-the-art battery technology and related EAP concepts is followed by a review of energy storage requirements for various classes of electrified aircraft. Recent battery technology advances are then reviewed along with their applicability and limitations for expanding the electrified aircraft market. Alternative electrochemical energy storage and conversion systems (e.g., fuel cells, flow batteries, supercapacitors, etc.) are also addressed. The chapter concludes with a review of multifunctional structures with energy storage capability and their potential application to EAP.

Keywords

electrochemical energy storagebatteryfuel cellsupercapacitormultifunctional structurespecific energypower densityflow batteryaluminum-air batterymolten materials
Type
Chapter
Information
Electrified Aircraft Propulsion
Powering the Future of Air Transportation
 , pp. 190 - 223
Publisher: Cambridge University Press
Print publication year: 2022

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