"Tea Leaves: The Next Mainstream, Affordable Battery Material"

Researchers at Harvard University have developed a breakthrough in sodium-ion battery technology using tea leaf waste to create an affordable and sustainable battery anode, potentially providing a solution for grid-level energy storage. The new anode, named TS-1400-HCl, showed significant improvements over existing carbon anodes, with greater capacity, efficiency, and longevity. This biomass approach has the potential to offer real sustainability and positive environmental impact as a mainstream, affordable battery material, with the battery estimated to cost about $5-7 per kilogram.