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The problem of coupling the porous structure of carbon materials with their electronic structure to achieve the maximum efficient operation of an electric double layer, i.e., the interfaces with the electrolyte, was considered. The initial materials for producing activated carbon were flax and field horsetail fibers. The effect of introducing iron-containing impurities into the initial raw flax material and natural silicon in the horsetail structure on the parameters of capacitive energy storage was studied. The investigation of the capacitance-voltage characteristics of the electric double layer, magnetic properties, and Raman spectroscopy data made it possible to propose a mechanism explaining the data obtained.

The multilayer structure consisting of alternating semiconductor (InSe) and molecular nematic (MN) nanointerlayers has been prepared using the intercalation techniques. The stages of the preparation of the InSe〈MN〉 structures have been described, and the results of investigation of their physical properties by impedance spectroscopy have been reported. The structures of the impedance models have been proposed, and prospects for their use as ultrahigh-capacitance varicaps and nanostructured elements of delay lines that can be directly incorporated into nanochips have been justified.

Intercalated crystals of indium and gallium selenide are prepared. It is shown that laser intercalation of nickel into GaSe samples leads to a giant magnetoresistive effect whose magnitude and sign depend on the concentration of the guest component. The giant magnetoresistive effect in the InSe intercalation compounds is considerably weaker and does not exceed 5%. The experimental data obtained are explained in terms of magnetic delocalization (localization) of charge carriers with the participation of states of intercalated magnetically active atoms in the vicinity of the Fermi level.