In our laboratory we are interested to develop new and improved molecular electrocatalysts for electrochemical reactions of relevance to global sustainability. We use a combination of electrochemical, spectroscopic, and computational chemistry techniques to design, test and optimise the performance of molecular catalysts for specific chemical reactions, for example the oxygen reduction reaction (ORR) which is important in fuel cell and metal-air battery technologies. In many cases, we take inspiration from the catalytic function of enzymes whose active sites provide the blueprint for the design of effective synthetic molecular catalysts for chemical reactions of importance to energy, sensing and green chemistry.