Analyzing transient corrosion effects of water electrolysis cathode and anodes alloy based catalysts using WAXS, SAXS and XRF

As we move towards a sustainable society, electrolysis based hydrogen provides a flexible molecule that can be used for chemicals, fuels, heating, etc. While water electrolysis catalysts have been analyzed extensively from a fundamental aspect, there are still open question with respect to commercial issues such as corrosion and issues relating to stopping and starting. In this work we would analyse various anode (NiFe, NiCo, FeCo) and cathode (NiMo, CoMo, NiW) catalysts at industrial relevant current densities (300-1000 mA/cm2) and monitor their corrosion and dealloying as a function of transient stop-start experiments. By scanning x-rays throughout the anode/diaphragm/cathode device, we can monitor in-operando location specific lattice modifications or dealloying as a function of transient stop start operations. Furthermore using CsOH or RbOH as an electrolyte will allow us to monitor X-ray fluorescence, and thus time resolved double layer charge build-up and dissipation.