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SUMMARY:MEAM Seminar: "The Challenges and Opportunities of Battery-Powered Flight"
DESCRIPTION:Sustainable transportation and aviation are critical to address climate change and renewable energy powered battery electric vehicles represent a promising path towards this goal. I will discuss the performance metrics needed of batteries for electric land and air vehicles\, and assess the energy-efficiency of electric vertical take-off and landing (eVTOL) aircraft compared to ground vehicles.[1] Identifying the challenging but achievable battery performance requirements for eVTOL\, I will discuss our approach to achieve simultaneously high specific energy and power by using lithium metal anodes\, enabled through a new density-driven dendrite suppression mechanism realized through a soft polymer-ceramic composite separator[2]. I will discuss the unique performance failure mode related to power fade for eVTOLs rather than energy fade for electric vehicles. Following this\, I will discuss the requirements and challenges for all-electric battery-powered single and twin-aisle aircraft and outline battery chemistry innovations that offer a pathway to approaching these requirements.[3] I will discuss two key tools to accelerate the innovation timeline for these battery chemistries: (i) in-situ and operando characterization[4] (ii) closed-loop battery material discovery with physics based simulation and robotic experimentation.[5] \nReferences: [1] Sripad\, Viswanathan\, Proceedings of the National Academy of Sciences 9\, 2021 118 (45) e2111164118 [2] Fu et al.\, Nature Materials\, (2020)\, 19\, 758–766. [3] Viswanathan et al.\, Nature\, 601\, 519–525 (2022)\, [4] Hafiz et al.\, Nature\, 594\, 213–216 (2021) [5] Dave et al.\, arXiv:2111.14786. Nature Communications (under revision)
URL:https://seasevents.nmsdev7.com/event/meam-seminar-the-challenges-and-opportunities-of-battery-powered-flight/
LOCATION:Wu and Chen Auditorium (Room 101)\, Levine Hall\, 3330 Walnut Street\, Philadelphia\, PA\, 19104\, United States
CATEGORIES:Seminar
ORGANIZER;CN="Mechanical Engineering and Applied Mechanics":MAILTO:meam@seas.upenn.edu
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