Solid state battery design charges in minutes, lasts for thousands of cycles::Researchers from the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) have developed a new lithium metal battery that can be charged and discharged at least 6,000 times—more than any other pouch …
Lithium might be the lightest metal but it only has 1 free electron. Aluminum has 3 electrons per atom therefore theoretically it would have a higher density than lithium.