Challenges and key requirements of batteries for electric vertical takeoff and landing aircraft

Xiao Guang Yang, Teng Liu, Shanhai Ge, Eric Rountree, Chao Yang Wang

Research output: Contribution to journalReview articlepeer-review

1 Scopus citations

Abstract

Electric vertical takeoff and landing (eVTOL) aircraft have attracted considerable interest as a disruptive technology to transform future transportation systems. Their unique operating profiles and requirements present grand challenges to batteries. This work identifies the primary battery requirements for eVTOL in terms of specific energy and power, fast charging, cycle life, and safety, revealing that eVTOL batteries have more stringent requirements than electric vehicle batteries in all aspects. Notably, we find that fast charging is essential for downsizing aircraft and batteries for low cost while achieving high vehicle utilization rates to maximize revenues. We experimentally demonstrate two energy-dense Li-ion battery designs that can recharge adequate energy for 80 km eVTOL trips in 5–10 min and sustain over 2,000 fast-charge cycles, laying a foundation for eVTOL batteries.

Original languageEnglish (US)
Pages (from-to)1644-1659
Number of pages16
JournalJoule
Volume5
Issue number7
DOIs
StatePublished - Jul 21 2021

All Science Journal Classification (ASJC) codes

  • Energy(all)

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