GM-backed startup promises cheaper, longer-lasting EV batteries

Stack of Rivian battery cellsAddionics developed a new foil current collector General Motors' GM Ventures backed Addionics with funding Addionics plans to build a factory in the U.S. A startup aims to make EV batteries cheaper by focusing on an oft-overlooked battery component. Addionics, which is backed by General Motors' GM Ventures venture-capital arm, has developed a new...