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Information × Registration Number 0223U002168, 0120U000159 , R & D reports Title The strategy of selecting the optimal solvent for the creation high-energy power sources based on electrochemical systems alkali metal - sulfur popup.stage_title Head Kyryllov Sviatoslav O., Registration Date 11-02-2023 Organization Interdepartmental Department of Electrochemical Energy of the National Academy of Sciences of Ukraine popup.description2 BATTERY, LITHIUM, ELECTROLYTE, SULFUR, TITANIUM DIOXIDE, SYNERGETIC EFFECT, ADSORPTION. The object of research is electrolyte systems and electrode materials for lithium-sulfur batteries. The purpose of the work is to develop a strategy for selecting the optimal solvent for creating high-energy current sources based on the electrochemical systems alkali metal - sulfur or a sulfur-containing compound. Research methods – conductometry, impedance spectroscopy, voltammetry, galvanostatic cycling, electron microscopy. A strategy for choosing solvents, salt concentration, nature and concentration of additives for electrolytes of lithium-sulfur batteries has been developed in order to improve their specific and cyclic characteristics, as well as to reduce self-discharge. When developing the strategy, the main factors that determine the influence of the composition of the electrolyte on the stability of the open circuit voltage (OCV) after the assembly of the mock-up sample of the battery and when storing the charged state, the value of specific capacity depending on the concentration of sulfur in the composition of the electrode, its fraction, current density and cycle number. The specific and cyclic characteristics of the sulfur electrode were determined for different composition of solvents, salt concentration and composition of composite sulfur electrodes. The positive influence of LiNO3 and water admixtures on the specific and cyclic characteristics is shown. Product Description popup.authors Vyshnevskyi Oleksii Anatoliyovych Hloba Nataliia I. Lisnycha Tatyana V. Pershina Katherine D. Sirosh Vitalii A. Shmatok Yurii V. popup.nrat_date 2023-02-11 Close