A new 3D design for electrodes enables the Battolyser, a battery and electrolyzer in one, to store twice the amount of electricity it could previously hold and do so four times faster. Researchers from Delft University of Technology have detailed their findings in the journal Cell Reports Physical Science. The Battolyser now charges and produces hydrogen at a rate comparable to current electrolyzers, all without relying on scarce precious metals. This increased capacity saves both space and costs.