Role of Nanostructures in the Formation of Emission Properties of Oxide–Nickel Cathodes

The electronic and crystal structures of oxide–nickel compositions based on the ternary system of barium, calcium, and strontium carbonates with nickel nanoparticles and barium carbonate nanocrystals are studied by electron spectroscopy and high precision X-ray diffraction. It is found that nickel nanoparticles have a substantial effect on the parameters of the electronic structure of barium oxide crystallites formed in these compositions during their heat treatment. It is shown that the X-ray diffraction method can be used as a basis for quality control of ternary carbonates for their effective use in the composition of oxide–nickel ca-thodes.