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As automakers scramble to make electric vehicles with longer ranges and speedier charging times, the chip industry has a message for them: You’re doing it wrong.

Semiconductor companies are urging EV-makers to ditch traditional silicon chips and embrace materials that will make cars more efficient, helping ease consumers’ “range anxiety” and someday making recharges as quick as a gas-station fill-up. But there isn’t an agreement yet on which approach to use. Silicon carbide is the front-runner, with gallium nitride emerging as a key contender.

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