The project undertakes fundamental investigations of hydrogen species in oxides; protons, neutral hydrogen, and hydride ions.
The project will contribute to the long-term development and understanding of proton conductors (for fuel cells and electrolyze rs), hydrogen separation membranes, and novel hydrogen storage materials. It will also contribute to understanding the role of hydrogen in semiconducting oxides for electronics and solar cells.
The work will focus on thermodynamics, new experimental appr oaches, and seeking answers to current riddles regarding the stability of the neutral and reduced hydrogen species in oxidic environments. In particular the project will measure hydration enthalpies of acceptor-doped oxides by isothermal reaction calorime try, investigate hydration of grain boundaries, measure the concentration and thermodynamics of neutral hydrogen (atoms and/or molecules) in oxides, and measure the thermodynamics of hydride ions in oxyhydrides.
This broad approach will enable a fruitful interdisciplinary investigation and discussion of hydrogen species in demanding cases such as wide bandgap semiconductors (e.g. ZnO), gate dielectrics (e.g. ZrO2) and novel transparent conducting oxides (e.g. Ca12Al14O33), and will integrate theory and m odelling with experimental studies.
The project involves groups at the University of Oslo (UiO) specializing in hydrogen defects in oxides, materials thermodynamics and modelling, and on studies of hydrogen in semiconductors. It also embodies collaborat ion and visits to the other leading groups worldwide in the field.