Shipping and other transport sectors could see a cleaner future thanks to a US technology start-up's plans for large-scale production of advanced lithium-metal batteries.

The batteries will double the energy density of conventional lithium-ion technology.

Lavle said it is building a gigafactory that will manufacture the next-generation battery modules at scale in the US by the end of 2023, with a final production capacity of about 7 gigawatt hours per year.