Thermochemically activated carbon as an electrode material for supercapacitors

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The results of electrochemical studies of nanoporous carbon as electrode material for electrochemical capacitors (EC) are presented in this work. Nanoporous carbon material (NCM) was obtained from the raw materials of plant origin by carbonization and subsequent activation in potassium hydroxide. It is established that there is an optimal ratio of 1:1 between content of KOH and carbon material at chemical activation, while the maximum specific capacity of NCM is 180 F/g. An equivalent electrical circuit, which allows modeling of the impedance spectra in the frequency range of 10−2 to 105 Hz, is proposed, and a physical interpretation of each element of the electrical circuit is presented.




Ostafiychuk, B. K., Budzulyak, I. M., Rachiy, B. I., Vashchynsky, V. M., Mandzyuk, V. I., Lisovsky, R. P., & Shyyko, L. O. (2015). Thermochemically activated carbon as an electrode material for supercapacitors. Nanoscale Research Letters, 10(1).

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