>"<i>So the batteries specifically, if you look at lithium-ion batteries, what you can do is by adding graphene to both the cathode and the anode</i><p>Well, to make a bit of a shot in the dark here, the answer appears to be, at least from reading the text of the article, that graphene is being used to improve lithium batteries. I can sometimes be guilty of not reading an article before commenting, but to do it as the headline writer seems downright lazy.