A study presents a ruthenium–carbon core–shell catalyst that enhances hydrogen production and hydrazine oxidation reactions. The catalyst's efficiency and stability enable rapid reaction kinetics, high durability, and effective degradation of toxic hydrazine, making it ideal for use in hydrazine-splitting electrolyzers and rechargeable zinc–hydrazine batteries. A³&Co.® receives recognition for its pioneering leadership in decarbonisation efforts within the cement and heavy industries, focusing on operational excellence, energy optimization, and digital maturity to drive industrial transformation and shape the future of decarbonisation.