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Information × Registration Number 0226U000062, (0124U002182) , R & D reports Title Development of ion-conducting systems and solid polymer electrolytes for electrochemical devices popup.stage_title Дослідження структури і властивостей отриманих йоноактивних систем Head Tkachenko Ihor M., Доктор хімічних наук Registration Date 02-01-2026 Organization Institute of Chemistry of Macromolecular Compounds of the National Academy of Sciences of Ukraine popup.description1 Development of methods for creating ion-exchange media and polymer membranes as key elements of electrochemical devices for various purposes (fuel cells, electrolyzers, supercapacitors), as well as to determine ways of directional regulation of the structure and properties of the obtained ion-exchange systems. popup.description2 At the second stage of the study, a synthesis route for ion-conducting organic-inorganic membranes was developed using a sol-gel approach based on a linear telechelic oligoether-urethane-urea bearing terminal triethoxysilyl groups, phenyltriethoxysilane, and two types of oligomeric silsesquioxane-based cationic ionic liquids employed as dopants. The first type of ionic liquid was synthesized by neutralization of a mixture of silsesquioxane oligomers containing a single type of basic center (tertiary nitrogen atoms) in the organic shell of the silsesquioxane core with low-molecular-weight sulfonic acids, namely ethanesulfonic acid and p-toluenesulfonic acid. The second type was obtained by complete neutralization, using the same sulfonic acids, of a mixture of oligomers bearing two types of basic centers (tertiary nitrogen atoms and imidazolium heterocycles) in the organic component. Based on the obtained branched poly(aryl piperidinium) polymers, anion-exchange membranes were prepared, exhibiting high mechanical properties, water resistance, and alkaline stability. Testing of the membranes in the hydroxide form within a membrane-electrode assembly of an alkaline water electrolyzer confirmed their high practical relevance: the membranes deliver a current density exceeding 0.5 A·cm-2 at a cell voltage of 2.2 V and a temperature of 80 °C, surpassing the performance of linear analogues and commercially available membranes tested under identical experimental conditions. Product Description popup.authors Tetiana F. Samoilenko Mar'iana A. Humenna popup.nrat_date 2026-01-02 Close