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Keywords:

  • fuel cells;
  • oxygen exchange;
  • solid-state structures;
  • time-resolved neutron diffraction
Thumbnail image of graphical abstract

Keep your eye on the oxygen: In situ time-resolved neutron diffraction measurements can be used to study the structural changes occurring during oxygen exchange in a material (see graph of the increase in oxygen content when the gas flux is switched from Ar to O2). The method is demonstrated for a layered cobaltite, which is a promising cathode material for intermediate-temperature fuel cells.