Yes. Chinese manufacturers are using sodium batteries in some low-range cheap city-cars, too. But fundamentally there is less energy storage in a charged sodium atom than a charged lithium atom so it seems sodium batteries must always be bigger and heavier than equivalent-capacity lithium batteries.
That doesn’t stop sodium batteries from being fundamentally bigger and heavier than lithium batteries for the same capacity. That just means the tradeoff can be more worth it in some regions
Yes. Chinese manufacturers are using sodium batteries in some low-range cheap city-cars, too. But fundamentally there is less energy storage in a charged sodium atom than a charged lithium atom so it seems sodium batteries must always be bigger and heavier than equivalent-capacity lithium batteries.
Not exactly, they work better in cold temps for northern countries.
That doesn’t stop sodium batteries from being fundamentally bigger and heavier than lithium batteries for the same capacity. That just means the tradeoff can be more worth it in some regions