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Information × Registration Number 0220U100711, 0117U004262 , R & D reports Title The impact of the electronic structure of nanocomposite cathode SiO2 / TiO2 / Fe2O3 / Al2O3, obtained the shock-vibration processing on the charge capacity of lithium power sources popup.stage_title Head Zaulychnyi Yaroslav V., Доктор фізико-математичних наук Registration Date 24-01-2020 Organization Publishing and Printing Institute of Igor Sikorsky Kyiv Polytechnic Institute popup.description2  The influence of the time of shock-vibration processing on the structural-morphological, electron-structural features of mixtures of nanosized SiO2 / TiO2, SiO2 / Fe2O3, Fe2O3 / Al2O3 and SiO2 / Al2O3 with different ratio of components is established. The relationship between the change of these features and the charge capacities of lithium current sources with cathodes based on the above nanocomposites is revealed. This dependence allows us to purposefully predict the recombination and intercalation ability of Li + ions into cathode materials in such nanocomposites, depending on the method of processing the cathode material. It is established that the increase of the charge state of oxygen at the base of the cathode material leads to an increase in the intercalation capacity of lithium current sources. In addition, the growth of the charge state due to the settlement of deep-settled states leads to a decrease in the recombination capacity of lithium ions on the surface of the cathode material, which ensures the further cyclicity of the LDS. On the other hand, the occupation of high-energy states near the valence band ceiling increases the likelihood of recombination of lithium ions into oxide groups on the surface of the cathode material, which impedes further inter-deintercalation of lithium ions during subsequent cyclization. The results obtained allow us to find the optimal component ratios and processing modes of the cathode material base with high electrochemical characteristics. Based on the obtained data, recommendations for obtaining cathode material based on SiO2 / TiO2 and SiO2 / Al2O3 with the highest values ​​of specific charge capacities are presented. Product Description popup.authors Dudka Oleksandr I. Zaulychnyy Yaroslav V. Khrystenko Vadym V. Yavorskyi Yurii V. popup.nrat_date 2020-04-02 Close