Abstract
The energetic properties of the new composite electrode materials suitable for electrochemical capacitors were investigated. Composite electrodes were made using Norit A activated carbon and synthesized sparingly soluble copper salts such as copper iodide(I) and hexacyanoferrates (II), etc. (III). The composition of the salts was confirmed by elemental analysis and the particle size was determined by the Scherrer equation using the data of X ray phase analysis. The electrochemical characteristics of the electrodes were determined with the help of cyclic voltammetry, charge discharge galvanostatic curves, and impedance spectroscopy. It was found that the composite materials containing 5–30 wt.% of copper iodide and copper hexacyanoferrate (II) had lower capacitive characteristics compared with the pure carbon electrode. The introduction of double hexacyanoferrates (II), copper (III) and potassium into the electrode material led to the increase in the specific capacitance by 30 and 20% respectively, compared with a carbon electrode.
Highlights
Исследованы энергетические свойства новых композитных электродных материалов, пригодных для электрохимических конденсаторов
It was found that the composite materials containing 5–30 wt.% of copper iodide and copper hexacyanoferrate (II) had lower capacitive characteristics compared with the pure carbon electrode
The introduction of double hexacyanoferrates (II), copper (III) and potassium into the electrode material led to the increase in the specific capacitance by 30 and 20% respectively, compared with a carbon electrode
Summary
В основу синтеза иодида меди положе на реакция взаимодействия сульфата меди с иодидом калия в мольном соотношении 1 : 2. Гексацианоферрат (II) меди, а также гексацианоферрат (II) калия, меди и гекса цианоферрат (III) калия и меди получены при стехиометрическом мольном соотноше. В основу синтеза иодида меди положе на реакция взаимодействия сульфата меди с иодидом калия в мольном соотношении 1 : 2. Гексацианоферрат (II) меди, а также гексацианоферрат (II) калия, меди и гекса цианоферрат (III) калия и меди получены при стехиометрическом мольном соотноше. О. ЛЕПЕШКИН нии растворов сульфата меди и комплексной соли. Равные объемы реагентов из бюреток медленно по каплям при постоянном интен сивном перемешивании добавляли в стакан с дистиллированной водой. Получен ный осадок иодида меди или комплексной соли отфильтровывали, промывали дистил лированной водой и выдерживали в сушиль ном шкафу при температуре 60°С в течение 4 часов
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