ISSUE 011 Autumn 2021 Candela C-7 hydrofoil speedboat dossier l In conversation: Robert Hoevers l Battery recycling focus l Vehicle dynamics insight l ZeroAvia hydrogen-electric aircraft digest l Motor materials

4 Intro Developments in electric aviation look set to make flights a widespread reality soon 6 The Grid More powerful connectors for high-voltage EVs unveiled, solid-state lithium sulphur cells in the pipeline, superconductors rated up to 5 kW announced, and much more... 16 In conversation: Robert Hoevers Squad Mobility’s solar-powered urban ride share EV is designed to meet a growing demand for two-person transportation, as its CEO explains here 20 Dossier: Candela C 7 speedboat Thanks to its hydrofoiling system, this vessel has speed and endurance, and is now in serial production. We detail the development of its design and engineering 32 Focus: Battery recycling How EV battery materials are recycled, and why new processes for doing so are likely to grow in importance 42 Insight: Vehicle dynamics Electric powertrains present different dynamic issues from IC vehicles, which means EV engineers have to take different approaches to their design, as we show here 50 Digest: ZeroAvia hydrogen-electric aircraft We explain how this aircraft powertrain developer is using hydrogen-electric power to cut the CO 2 emissions produced during short-haul flights – the worst culprits 56 Deep insight: Motor materials Industry insiders share their expertise in choosing the right e-motor materials and designs 64 Focus: Sealing These unsung but essential components come in different types and materials, so here’s a guide to their uses, what they’re made from and why 74 PS: Towards a 1000-mile range There’s more to this headline figure than addressing range anxiety, as experts point out 50 20 Autumn 2021 | E-Mobility Engineering 3 Contents | Autumn 2021