Electrochemical Characteristics of Capacitor Systems Formed on Chemically Modified Carbon Base
Influence of chemical modification of the activated carbon (AC) material on its specific capacity is found out with the use of methods of impedance spectroscopy, cyclic voltammetry and chronopotentiometry. As shown, a general capacity is the sum of two components, namely, double electric-layer (D...
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| Datum: | 2008 |
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| Hauptverfasser: | , , , |
| Format: | Artikel |
| Sprache: | English |
| Veröffentlicht: |
Інститут металофізики ім. Г.В. Курдюмова НАН України
2008
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| Schriftenreihe: | Наносистеми, наноматеріали, нанотехнології |
| Online Zugang: | http://dspace.nbuv.gov.ua/handle/123456789/76227 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Zitieren: | Electrochemical Characteristics of Capacitor Systems Formed on Chemically Modified Carbon Base / B.K. Ostafiychuk, I.M. Budzulyak, V.I. Mandzyuk, R.P.Lisovskyy // Наносистеми, наноматеріали, нанотехнології: Зб. наук. пр. — К.: РВВ ІМФ, 2008. — Т. 6, № 4. — С. 1207-1217. — Бібліогр.: 7 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| Zusammenfassung: | Influence of chemical modification of the activated carbon (AC) material on its
specific capacity is found out with the use of methods of impedance spectroscopy,
cyclic voltammetry and chronopotentiometry. As shown, a general capacity
is the sum of two components, namely, double electric-layer (DEL) capacity
and pseudocapacity, thus the deposit of the last is insignificant (8—14%). The
alloying with rare-earth metals and their compounds results in the rise of specific
capacity of AC. Probably, the principal reason of such a growth is transformation
of valence bond of carbon material due to introduction of the additional
electron states from the implanted metals. As a result, the considerably
greater amount of ions (especially, positive ones) will take part in DEL forming,
and, consequently, will predetermine growth of specific capacity. |
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