How Electric-Car Batteries Are Built

摘要

Lithium-ion batteries-the dominant technology in forthcoming electric cars-begin when active battery ingredients are combined to form an electrode slurry. A liquid solvent, electrode powder (for the negative electrode, a form of carbon; for the positive, a form of lithium-containing metal oxide or phosphate) and a chemical binder are blended into a paste in what look like industrial pizza-dough mixers.