Abstract
The paper considers the issues related to the development of production technology of composite carbon ribbon (CCR) which is the basis for supercapacitors’ electrodes. It also presents the results of comprehensive experimental electrochemical and electro energy research in both - CCR and electrodes, based on CCR and supercapacitors models with stacked and winded structure with the use of such electrodes. The structure of composite electrodes based on activated carbon, electro conductive additive and polymer binder was examined by scanning electronic microscopy. Specific square area of electrodes surface and carbon material pores size was defined by the method of N 2 absorption. Electro chemical characteristics of composite electrodes were studied depending on the type of applied current collector. It was established that for non-watery electrolyte 1 M TEABF 4 /PC, minimal full internal resistance of 7.2 Ohm/cm 2 and maximal specific electric capacitance 80 F/g are possessed by the electrodes based on CCR glued on current collector by means of electro conductive adhesive. The electrodes demonstrate stability after 1000 cycles of galvanostatic charge/discharge. Basing on the fabricated composite electrodes, models of stacked and winded supercapacitors were built and main parameters of their electric-energy characteristics were studied.
Highlights
В статье рассмотрены вопросы разработки технологии производства композитной углеродной ленты (КУЛ), являющейся основой для электродов суперконденсаторов
The paper considers the issues related to the development of production technology of composite carbon ribbon (CCR) which is the basis for supercapacitors’ electrodes
The structure of composite electrodes based on activated carbon, electro conductive additive and polymer binder was examined by scanning electronic microscopy
Summary
Объединенный институт высоких температур РАН 125412 Москва, ул. Ижорская, д. 13, стр. 2. В статье рассмотрены вопросы разработки технологии производства композитной углеродной ленты (КУЛ), являющейся основой для электродов суперконденсаторов. Структура КУЛ на основе активированного угля, электропроводящей добавки и полимерного связующего изучена сканирующей электронной микроскопией. Исследованы электрохимические характеристики композитных электродов в зависимости от типа используемого токового коллектора. Установлено, что для неводного электролита 1 M TEABF4/PC минимальным полным внутренним сопротивлением 7,2 Ом/см и максимальной удельной емкостью 80 Ф/г обладают электроды на основе КУЛ, наклеенных на токовый коллектор с помощью электропроводящего адгезива. На основе полученных композитных электродов изготовлены модели наборных и намоточных суперконденсаторов и исследованы их основные электроэнергетические характеристики. COMPOSITE CARBON RIBBON FOR SUPERCAPACITORS ELECTRODES K.К. Basing on the fabricated composite electrodes, models of stacked and winded supercapacitors were built and main parameters of their electric-energy characteristics were studied
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