Treating interface with acid overcomes high electrical resistance, tripling fluorine-free graphene oxide fuel cell power density to 0.7 W/cm²

https://techxplore.com/news/2026-04-interface-tweak-triples-graphene-oxide.html

"activates nanosheets' surface chemistry before sandwiching between electrodes, drastically reducing resistance at contact point, allowing far more efficient proton movement across interface... eco-friendly cell rivals performance of commercial fluorine-based membranes under similar conditions... universal strategy: interface design isn't exclusive to graphene oxide; it can be applied to other nanosheet and polymer membranes to boost efficiency across various types of fuel cells"