Not really, graphene based products are already hitting the market:
"Turnigy Graphene packs utilize carbon in the battery structure to form a single layer of graphene just 0.335nm thick, making that type of battery substrate the thinnest known to mankind. The graphene particles form a highly dense compound allowing electrons to flow with less resistance compared to traditional Lipoly battery technologies. The result is a battery capable of maintaining greater power output whilst remaining much cooler under load. Since heat and resistance are the natural enemy of batteries Graphene chemistry has significantly reduced these problems and the result is an incredible boost in cycle life. Turnigy Graphene batteries are the new standard for serious hobbyists who require POWER ON DEMAND."
https://hobbyking.com/en_us/batteries-accessories/turnigy-graphene-2.html
Yes, really. Chinese batteries for toys doesn’t move it out of the dud category.
Compared to the thousands of breathless research articles over the years, it isn’t much.
According to this guy who did a teardown the batteries are a scam. The cells are made by A123, and nothing says battery scam like A123.
https://www.youtube.com/watch?v=fBy4eoDVp_g