So, I haven't read the paper, and maybe they go into this there, but I wonder whether this approach runs into the same problem any potential graphene-based technology seems to run into, which is synthesising graphene sheets at a scale to make this actually market-viable seems nigh impossible. Maybe there's some other breakthrough I'm not aware off, but my general perception so far is that most applications for graphene always run into this problem where it works incredibly well on paper and in small-scale experiments, but we cannot scale things up because growing graphene at larger scales is a giant hurdle.
If anyone here has more up-to-date info to share, I would be very grateful, obviously.
If that can be overcome, this tech here sounds AWESOME though. Props to these fine individuals working on this project.