Graphene batteries

http://www.nature.com/ncomms/2015/150625/ncomms8393/full/ncomms8393.html

Graphene batteries will have 5x the cycle charge.


Graphene Batteries "...will have an energy density of 1,000 Wh/kg (for comparison, lithium batteries generally have a energy density of 180 Wh/kg)."

http://futurism.com/scientists-develop-better-battery-thanks-graphene/