Accumulation charge mechanisms in electrochemical systems formed based on activated carbon and manganese oxide
In this work, the porous structure of the carbon material and the crystalline structure of manganese oxide α - modification (α - MnO2) have been investigated. The electrochemical performance of symmetric and asymmetric supercapacitors (α - MnO2 / Activated carbon) was investigated by cyclic voltamme...
Main Authors: | , , , , , |
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Format: | Article |
Language: | English |
Published: |
Vasyl Stefanyk Precarpathian National University
2020-03-01
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Series: | Фізика і хімія твердого тіла |
Subjects: | |
Online Access: | https://journals.pnu.edu.ua/index.php/pcss/article/view/3360 |
Summary: | In this work, the porous structure of the carbon material and the crystalline structure of manganese oxide α - modification (α - MnO2) have been investigated. The electrochemical performance of symmetric and asymmetric supercapacitors (α - MnO2 / Activated carbon) was investigated by cyclic voltammetry and galvanostatic cycling methods. The processes occur mainly at the electrode – electrolyte interface have been analyzed. It was determined that at discharge currents of 0.5 - 5 mA, the specific capacitance value for the α - MnO2 / Activated carbon hybrid capacitor exceeds the value of the symmetric capacitor by 45 - 55 % under the same conditions. |
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ISSN: | 1729-4428 2309-8589 |