Study of the applicability of directional modification of nanostructures to improve the efficiency of their performance as the anode material of lithium-ion batteries

The paper presents the results of a study of using the various types of ionizing radiation for the directional modification of nanostructures to increase the resource lifetime of nanostructures that are applicable as anode materials for lithium-ion batteries. For the directed modification, the following types of radiation were applied: electron and gamma radiation with an energy of 5 MeV and 1.35 MeV, respectively, as well as beams of C 2+ and O 2+ ions with an energy of 1.75 MeV/nucleon. It was established that for unmodified samples, complete degradation occurs on the 411st cycle (capacity decrease by more than 80% of the nominal). For samples irradiated with gamma rays and an electron beam, the capacity decreases after 690 and 750 cycles, respectively. That indicates a higher resistance to degradation due to a change in the crystal structure as a result of radiation annealing of defects. For samples irradiated with C 2+ and O 2+ ions, a gradual decrease in the discharge capacitance after 900 cycles is observed, which indicates a high resistance to degradation.