This article from Science Daily written by Karlsruher Institut für Technologie (KIT)
Hydrogen produced from renewable energy sources with the help of electric power is deemed a key to the energy transition: It can be used to chemically store wind and solar energy in a CO2-neutral way. Researchers have studied water electrolysis processes on the surface of an iridium oxide catalyst.
Using energy from solar modules and wind turbines, water can be split by electrolysis into its constituents hydrogen and oxygen without producing any dangerous emissions. As the availability of energy from renewable sources varies when producing green, i.e. CO2-neutral, hydrogen, it is very important to know the behavior of the catalysts under high loading and dynamic conditions. “At high currents, strong oxygen bubble evolution can be observed on the anode, which aggravates measurement.
Source: Karlsruher Institut für Technologie (KIT). “Green hydrogen: Focus on the catalyst surface.” ScienceDaily. ScienceDaily, 24 August 2021. <www.sciencedaily.com/releases/2021/08/210824135333.htm>.