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Evolution of the surface wettability of vertically oriented multilayer graphene sheets deposited by plasma technologyPaul, Domen ...Carbon deposits consisting of vertically oriented multilayer graphene sheets on metallic foils represent an interesting alternative to activated carbon in electrical and electrochemical devices such ... as super-capacitors because of the superior electrical conductivity of graphene and huge surface– mass ratio. The graphene sheets were deposited on cobalt foils by plasma-enhanced chemical vapor deposition using propane as the carbon precursor. Plasma was sustained by an inductively coupled radiofrequency discharge in the H mode at a power of 500 W and a propane pressure of 17 Pa. The precursor effectively dissociated in plasma conditions and enabled the growth of porous films consisting of multilayer graphene sheets. The deposition rate varied with time and peaked at 100 nm/s. The evolution of surface wettability was determined by the sessile drop method. The untreated substrates were moderately hydrophobic at a water contact angle of about 110◦ . The contact angle dropped to about 50◦ after plasma treatment for less than a second and increased monotonously thereafter. The maximal contact angle of 130◦ appeared at a treatment time of about 30 s. Thereafter, it slowly decreased, with a prolonged deposition time. The evolution of the wettability was explained by surface composition and morphology. A brief treatment with oxygen plasma enabled a superhydrophilic surface finish of the films consisting of multilayer graphene sheetSource: Nanomaterials [Elektronski vir]. - ISSN 2079-4991 (Vol. 14, Art. 1023, 2024, 13 str.)Type of material - e-articlePublish date - 2024Language - englishCOBISS.SI-ID - 198932739
Author
Paul, Domen |
Zaplotnik, Rok, 1981- |
Primc, Gregor, 1984- |
Vesel, Alenka |
Mozetič, Miran, 1961-
Topics
tehnologija površin |
tenke plasti |
ogljik
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Paul, Domen | 52423 |
Zaplotnik, Rok, 1981- | 31618 |
Primc, Gregor, 1984- | 33326 |
Vesel, Alenka | 20048 |
Mozetič, Miran, 1961- | 10429 |
Source: Personal bibliographies
and: SICRIS
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