As carmakers race to develop electric battery-powered cars, they are constantly vying for anything that will give them the edge over rivals.
After announcing that it expected to produce its “solid-state” batteries as early as 2027, Toyota on Tuesday unveiled ambitions to halve the size and cost of power units for its electric vehicles to make them safer and let them charge faster.
But despite the Japanese car group’s optimism, this holy-grail battery technology has long eluded the industry.
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