Lithium-ion batteries are one of the most successful technologies ever invented, and now span everything from smartphones to power stations — but the technology is not without its flaws and limitations, and scientists are now busy trying to figure out which type of next-gen battery will take over next.
One of the big safety risks with lithium-ion is thermal runaway, causing overheating and fires, and some future battery technologies are focusing on this in particular. One of the leading contenders, sodium-ion, just passed a major safety test at Hyundai, while this battery type is also showing lots of promise overall.
