I read the words "limitless power" and assumed it is crap. In case it it not, please reply to this comment, and I will give the article a read. There is no reason for you to do this, but thanks in advance, kind strangers.
It smells like there's actually some interesting research being done here using graphene to extract energy from the ambient environment (possibly harvesting the work done as the graphene expands during hearing?) but the press release was written by someone who does not understand the subject at all.