I know this crowd has an affinity for hemp, if not as much for electronic tech.. so this caught my eye:
Hemp nanosheets could surpass graphene as ultimate supercapacitors
While graphene has long been heralded as the future of supercapacitors, new research indicates that fibers from hemp plants can contain as much energy and power as graphene itself.
What’s more, its source is a plant, which means it would cost significantly less to manufacture.