https://www.youtube.com/watch?v=h2u4pId42cA

This will bring you to several videos... 

Look for:  "The Breakthrough Battery Technoloby Investors are Betting Millions.."

NBC video on innovations in battery technology... or so the title would lead you to believe, but it really focuses on only one company that has been developed to deliver a better performing and more economical lithium ion battery.  An interesting video, but there are many more companies working on the same problem.