Sangaraju Shanmugam of Energy Science and Engineering at DGIST in South Korea and colleagues at Pacific Northwest National Laboratory (PNNL), USA. Have developed an alternative and cheap anode material that allows them to carry out ultra-stable alkaline electrolysis of water. The highly efficient and ultra-durable core-shell nanostructured electrocatalyst allows them to release oxygen and hydrogen gases from water. The catalyst precludes the need for less common and expensive metals such as iridium and ruthenium, instead the team used cobalt to bridge organic ligands in a Prussian blue analog that acts as a precursor for their metal-rich, nitrogen-doped graphitic nanocarbon-encapsulated core-shell electrocatalysts. This works well for the oxygen evolution reaction at the system's anode, which is otherwise sluggish in the water splitting reactions.