Multifunctional Spinel Structure for Efficient Direct Recycling of Spent Layered Cathodes into Fast-Charging Materials.

Summary: We use a lot of lithium-ion batteries in our phones and cars, but we are running out of materials to make them. Recycling old batteries is a great idea, but it is hard to put the missing lithium back into the worn-out battery parts. Scientists have found a clever way to "recycle waste with waste." They use leftover materials to rebuild the surface of old battery parts, creating tiny 3D tunnels. These tunnels make it easy for lithium to flow back in quickly. The newly recycled batteries charge super fast and last a long time, keeping almost 88% of their power after 500 super-fast charges. This is even better than brand-new batteries you can buy today!