Researchers from Delft University of Technology have developed a groundbreaking 3D electrode design that significantly enhances the storage capacity and charging speed of the Battolyser, a dual-function energy storage device that combines a battery and an electrolyzer. This innovative technology can now store twice as much electricity as before and charge and produce hydrogen four times faster, all without the need for rare precious metals. The Battolyser's ability to switch between charging and electrolysis to discharging sets it apart from standard electrolyzers. The new electrode design improves the flow of electricity through the device and enhances gas removal efficiency during electrolysis, resulting in space and cost savings. With fewer cells required thanks to the powerful electrodes, the Battolyser can offer the same storage capacity while producing more hydrogen. By utilizing four times fewer materials for the cells, the technology achieves a 75% reduction in material costs as it scales up, leading to overall lower material usage and costs. Lead author Robin Möller-Gulland, in collaboration with Professor Fokko Mulder, developed the electrode structure with channels for electrolyte to boost conductivity, enabling the battery to charge quickly and match the speed of an electrolyzer without precious metals. The improved charging speed and capacity of the Battolyser cater to the energy market's future needs, where energy surplus and shortages often occur over about four hours. This advancement allows for 82% charge in just 18 minutes without compromising battery capacity, making it a promising solution for peak energy usage periods.