SolidEnergy Systems, LLC: GM partners with startup SolidEnergy Systems to pack more energy in its batteries

GM's venture arm invested in battery startup SolidEnergy Systems five years ago. Now, GM is tapping the MIT spinout to help it pack more energy into its batteries, the latest in a string of moves by the automaker aimed at accelerating its shift to electric vehicles. GM president Mark Reuss, who announced the partnership Thursday [...]