Development of efficient and robust electrocatalytic systems for large-scale hydrogen production by low-cost water splitting devices

This dissertation addresses the need to reduce the cost to hydrogen derived from water electrolysis technologies. In particular, the doctoral studies herein address the reliance of noble-metal electrocatalysts for the anodic water splitting reaction, so that a transition from highly scarce metals such as iridium and ruthenium is also met, as noble-metal abundances cannot facilitate the terawatt scales that are needed to decarbonise the hydrogen industry. From this, earth-abundant alternatives have been explored, characterised and employed in state-of-the-art and newly emerging electrolyser designs that are prototyped to meet the applicability and integration requirements of the technology at industry scale.