And by using less expensive materials, car companies could quickly increase the number of cheap EV models available on the market. The scientists behind its development say that it could extend the average lifetime of a lithium-ion battery from 10 to 15 years. The specifics are pretty complex for those of us that aren’t atomic scientists, but the upshot is that it works really well with electrodes made out of aluminum and silicon, two materials that are cheap and abundant but wear out more quickly than the more expensive graphite electrodes (which most EV batteries rely on currently). The polymer coating is called HOS-PFM, and it works by conducting both electrons and lithium ions simultaneously. Great news for prospective EV buyers: Scientists at Lawrence Berkeley National Laboratory have developed a new type of polymer coating that could completely change the way electric car batteries are made, making them cheaper and longer lasting at the same time.
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