According to ScienceDaily, researchers have found that a new Chinese sodium-ion battery achieves performance levels competitive with Tesla's premium lithium designs. Sodium could be a game-changer for electric vehicles: it's dramatically cheaper and more plentiful than lithium, potentially bringing down EV costs significantly. The main hurdles remaining are cold-weather charging reliability and increasing the battery's energy density. If these problems are solved, sodium could replace lithium as the dominant battery technology for the next generation of electric vehicles.

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