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Information × Registration Number 0214U008421, 0112U001658 , R & D reports Title Physico-chemical processes in pseudo-accumulation systems of electricity based on nanoporous carbon popup.stage_title Head Ostafiychuk Bohdan Kostyantynovych, Registration Date 23-12-2014 Organization Centre of distance learning and knowledge control of Precerpathian national University named after V.Stefanyk popup.description2 The project aims to study the processes of pseudocapacitance charge in electrochemical systems of capacitor type, to determine the contribution from different charge / discharge processes in a wide range of potentials in the overall capacity of system, to identify key functional surface groups responsible for these processes, and to study their impact on the charge / bit characteristics depending on the conditions for obtaining and modification of nanoporous carbon. The pseudocapacitance contribution to the overall capacity of supercapacitors formed from porous carbon material (PCM), composite PCM-exfoliated graphite and nitrogen-containing PCM. It was established that the optimum ratio of aqueous KOH electrolyte between nanoporous carbon materials and graphite is 85:15 respectively. It provides specific capacitance EC within 140 - 160 F / g at a discharge current 10 - 100 mA. A equivalent circuit diagram of EC based on the PCM-graphite composite is suggested, which is consistent with the results of impedance spectroscopy. The method of introducing nitrogen in PCM derived from raw materials of plant origin by chemical washing in concentrated nitric acid and subsequent thermal activation in a flow of argon is developed. It was found out that nitrogen-containing carbon materials are characterized by a fractal structure, which is formed by the aggregation of microscopic pores and formation of surface heterostructures nitrogen and oxygen. Product Description popup.authors Будзуляк І.М. Кузишин М.М. Морушко О.В. Рачій Б.І. Яблонь Л.С. popup.nrat_date 2020-04-02 Close