Lithium-ion batteries for electric vehicles are made with a class of PFAS chemicals.Source Photo/Getty ImagesLithium-ion batteries are the most common type of battery found in electric vehicles.Scientists found they contain PFAS or 'forever chemicals' found in air, water, snow, soil, and sediment.Research calls for better battery technology and recycling to mitigate PFAS pollution.Scientists have uncovered a new source of hazardous "forever chemical" pollution: the rechargeable lithium-ion batteries found in most electric vehicles.Some lithium-ion battery technologies use a class of PFAS chemicals, or per-and polyfluoroalkyl substances, that helps make batteries less flammable and conduct electricity.