Next goal for Toyota’s battery research: Fluorid-ion batteries for a range of 1.000 km

August 18, 2020 // By Christoph Hammerschmidt
Next goal for Toyota’s battery research: Fluorid-ion batteries for a range of 1.000 km
According to a report in the Nikkei Asian Review, Toyota, together with scientists from the University of Kyoto, is researching a fluoride ion battery, which is said to offer about seven times as much energy per unit weight as conventional lithium-ion batteries. It should enable electric vehicles to travel 1,000 kilometers on one charge.

The researchers have developed the prototype of a rechargeable battery with a solid-state electrolyte, whose anode consists of fluorine, copper and cobalt and whose cathode consists mainly of lanthanum, the the newspaper reports.

With the seven times higher energy density, the energy content of a ready-to-install vehicle battery could be significantly increased with the same installation space. However, the report does not indicate how far away prototype is from series production.

The fluoride ion batteries completely dispense with lithium. Such batteries - also known as FIBs - generate electricity by transporting fluoride ions from one electrode to another through an electrolyte that conducts fluoride ions. The advantage is that several electrons per metal atom can be transferred, which enables the high energy density.

Toyota and the scientists from Kyoto are not alone in their work on fluoride ion batteries. Researchers at the Karlsruhe Institute of Technology or the Helmholtz Institute in Ulm are also developing and testing such cells. However, the cells are not yet ready for series production.

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