Graphene has been in the news for a decade. I've not seen that it can do much except power things like cell phones. The nuclear battery is truly an energy source, but it has not yet been made commercially, and it doesn't match what management said about recharging while running. I'm working on mind control to add energy to water. I can already melt ice by concentrating on it. I will soon be able to use the power of my mind to boil water.