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UPDATED 1 Sept: The EI library in London is temporarily closed to the public, as a precautionary measure in light of the ongoing COVID-19 situation. The Knowledge Service will still be answering email queries via email , or via live chats during working hours (09:15-17:00 GMT). Our e-library is always open for members here: eLibrary , for full-text access to over 200 e-books and millions of articles. Thank you for your patience.
G Warwick, Record-breaking Zephyr’s battery holds eVTOL potential, Aviation Week & Space Technology, 14-17 January 2019 p 52
In US, Amprius is providing the high-energy-density lithium-ion cells for Airbus’ solar-powered Zephyr stratospheric unmanned aircraft. With graphite anodes, conventional lithium-ion cells possess an energy density of about 320 Wh/kg, but this is raised to 635 Wh/kg in the new cells incorporating silicon nanowire anodes. This eliminates the problem of significant volume changes when charging and discharging that quickly pulverises the material. The Zephyr stayed aloft for almost 26 days, creating a new endurance record.
Abstract details
Journal title: Aviation Week & Space Technology
Keywords: 4 Propulsion - 4.2 Battery-electric vehicles
Subjects: Aircraft Operation, Electric vehicles
