Kind of light on details; what chemistry? What's the watt hours per kilogram they're expecting to get? Is Toyota pursuing a particular research path that is r

Kind of light on details; what chemistry? What's the watt hours per kilogram they're expecting to get? Is Toyota pursuing a particular research path that is releasing its findings to the public yet, or is it all a closely-held secret? A full recharge in 10 minutes means it will be charging at 6C, which is impressive. I'm not a battery expert, but in a few years I guess their main competition will be whatever Tesla manages to accomplish with lithium ion (assuming they don't switch to something completely new), and lithium sulfur if someone figures out how to manufacture it in a way that's durable and cheap. Maybe there are other promising alternatives I'm not aware of (possibly including other solid state chemistries).