TECHNOLOGY FOR OBTAINING CARBON MATERIAL WITH OPTIMAL PORE SIZE DISTRIBUTION FOR SUPERCAPACITOR ELECTRODES
Journal Title: Вісник Кременчуцького національного університету імені Михайла Остроградського - Year 2017, Vol 1, Issue 103
Abstract
Purpose. To find the optimal ratio between the pore sizes of the activated carbon material from which the electrodes are made and the size of the ions of the organic electrolyte, which allows obtaining the maximum capacity for symmetric SC. Methodology. The work has been carried out by searching for the optimal ratio between the pore size and the electrolyte ions size. In the process of chemical activation occurred carbon combustion within the pores, which increased specific surface area of the carbon material and as a result, lead to increase of the specific energy capacity of electrodes for SC. Results. The example of an electrochemical system of a porous carbon electrode / organic electrolyte shows that the maximum capacity is reached when the pores of the carbon material become equally accessible both for cations and for anions. It is shown that not only the pore area but also the surface of the carbon powder, from which the electrodes are made, has a significant effect on the capacitance of the SC. Originality. The approach allows to obtain porous carbon materials with a specified pore size distribution. Practical value. This technology allows to obtain porous carbon materials, that are promising for the production of SC with high specific power. References 12, figures 3.
Authors and Affiliations
V. Izotov, D. Havrikov, І. Koltsov, А. Selikhova, N. Klyui, О. Belyaev
Keywords
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