- Tytuł:
- Enhanced Capacitance of Porous Carbon Electrodes through Deposition of Small Amounts of NiO
- Autorzy:
-
Kavaliauskas, Z.
Marcinauskas, L.
Valatkevicius, P. - Powiązania:
- https://bibliotekanauki.pl/articles/1503930.pdf
- Data publikacji:
- 2011-07
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
81.15.-z
81.05.U-
82.47.Uv
68.55.J- - Opis:
- Amorphous carbon and NiO/carbon composites were used as an electrode material for supercapacitors. The investigations were performed to evaluate the influence of the Ar/$C_2H_2$ ratio on the capacitance values of carbon and NiO/carbon electrodes. The surface morphology of the carbon electrodes changes from snowflake-like to columnar with the increase of the Ar/$C_2H_2$ ratio. The Raman scattering spectroscopy results demonstrated that the $I_{D}//I_{G}$ ratio decreases from 1.33 to 0.91 with the increase of the Ar/$C_2H_2$ ratio. It indicates the decrease of the sp^2 bonded carbon in the coatings. The specific capacitance of the carbon electrodes increases with the increase of the Ar/$C_2H_2$ ratio. The NiO/carbon electrodes show capacitance values 10 times larger as those of carbon electrodes. The largest specific capacitance of 27.7 F/g was obtained for NiO/carbon electrode, when carbon coating was deposited under Ar/$C_2H_2$=27.
- Źródło:
-
Acta Physica Polonica A; 2011, 120, 1; 66-69
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł