Hemp batteries last 8X longer than lithium, outperforming graphene for 1000th of the cost

https://returntonow.net/2022/01/05/hemp-batteries-last-longer-lithium-graphene/

"cooked the woody pulp and processed them into carbon nanosheets, which they used to build supercapacitors “on a par with or better than graphene” – the industry gold standard. Graphene is a synthetic carbon material lighter than foil yet bulletproof, but it is prohibitively expensive to make. We’re making graphene-like materials for a thousandth of the price – and we’re doing it with waste. Mitlin, a chemical engineer, first published a description of his team’s battery"

Related: Research team develops hemp-based masonry blocks

https://techxplore.com/news/2023-03-team-hemp-based-masonry-blocks.html