The effect of chemical modification of submicron barium titanate particles by the deposition of M _x O _y (x = Ti, Co, Ni) oxide layers from aqueous solutions of the corresponding precursors is studied upon the surface properties of modified BaTiO₃ particles and dielectric permittivity of organo-inorganic composites obtained by their dispersion in the matrix of cyanoethyl ester of polyvinyl alcohol and useful in electroluminescent light sources. It is shown that a significant increase (by about 25%) of the dielectric permittivity is observed only when adding Nb₂O₅, in comparison with a similar composite which contains unmodified BaTiO₃. A correlation is found between the dielectric permittivity of the organo-inorganic composites and the presence of Brensted neutral and basic centers with pK _a = 6−13, localized on the surface of a filler, being capable of interacting with the polymer matrix. It is shown that an increase of the dielectric permittivity upon deposition of niobium oxide on the surface of BaTiO₃ is caused by formation of such centers and modification of the surface layer structure of BaTiO₃ particles, with transformation of rutile-like Ti-O bonds to anataselike ones.

Low-temperature synthesis methods are used to produce nanoceramic materials for electrodes of the following ionistors: (ZrO₂)_0.6(In₂O₃)_0.4, praseodymium cobaltite, as well as neodymium, lanthanum, and nickel chromites; they operate in the presence of an ion-conducting phosphorosilicate separator membrane and phosphate impregnation. Film electrodes of ionistors are fabricated that consist of nanocrystalline oxide materials deposited as a thin film on a porous electroconductive metal substrate, i.e., foamed nickel. The MnO₂-foamed nickel electrode has a specific capacity of 45.0 F g⁻¹, which is compared with that of industrial supercapacitors.

A synthesis technology for ceramics based on a tetragonal solid solution of zirconia in ZrO₂-Y₂O₃-CeO₂ and ZrO₂-Y₂O₃-Al₂O₃ systems with a high degree of tetragonality (∼1.436) and an average crystal size of 45–70 nm has been developed; it can be recommended for producing bioceramics in restorative dentistry.