Simple technique of multiwalled carbon nanotubes growth on aluminum foil for supercapacitors
| Autor: | Alena A. Mitina, A. N. Red’kin, Evgene E. Yakimov |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
inorganic chemicals
Supercapacitor Materials science Mechanical Engineering chemistry.chemical_element Electric double-layer capacitor Condensed Matter Physics Electrochemistry Nickel chemistry Chemical engineering Mechanics of Materials Aluminium Electrode General Materials Science Surface layer FOIL method |
| Zdroj: | Materials Science and Engineering: B. 272:115342 |
| ISSN: | 0921-5107 |
| DOI: | 10.1016/j.mseb.2021.115342 |
| Popis: | A promising method for the direct growth of multiwalled carbon nanotubes (MWCNTs) on aluminum foil for supercapacitor electrodes has been developed. Mild oxidation of aluminum foil in a nickel nitrate solution was used to give catalytic properties to aluminum. After the treatment, the detected concentration of nickel in the surface layer of the aluminum foil was 20 wt%. Low-temperature deposition of MWCNTs was carried out by catalytic pyrolysis of ethanol vapor using liquid ethanol as the only precursor. The resulting MWCNTs layers had excellent adhesion to aluminum foil. A symmetrical two-electrode cell as well as a classical three-electrode cell, were used for electrochemical testing of the obtained materials. The cell with MWCNTs/Al foil electrodes exhibits the behavior of an electric double layer capacitor (EDLC). The specific capacity of the MWCNTs reaches 60F/g. This result is comparable to the characteristics of similar materials obtained by other methods. Excellent resistance to multiple charge–discharge cycles is also shown. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect