Thermochemically activated carbon as an electrode material for supercapacitors

被引：23
|
作者：
Ostafiychuk, Bogdan K. [1 ]
Budzulyak, Ivan M. [1 ]
Rachiy, Bogdan I. [1 ]
Vashchynsky, Vitalii M. [1 ]
Mandzyuk, Volodymyr I. [1 ]
Lisovsky, Roman P. [1 ]
Shyyko, Lyudmyla O. [1 ]
机构：
[1] Vasyl Stefanyk PreCarpathian Natl Univ, Phys & Technol Dept, UA-76018 Ivano Frankivsk, Ukraine
来源：
NANOSCALE RESEARCH LETTERS | 2015年 / 10卷
关键词：
Nanoporous carbon material; Potassium hydroxide; Chemical activation; Double electric layer; Electrochemical capacitor; ENERGY;
D O I：
10.1186/s11671-015-0762-1
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
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 10(5) Hz, is proposed, and a physical interpretation of each element of the electrical circuit is presented.
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页数：8
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