Browsing by Author "Ilatovskii, Daniil"

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  • High Performance Hydrogen Evolution Reaction Catalyst Based on Single-Walled Carbon Nanotubes Decorated by RuOx Nanoparticles
    (2020-06-17) Fedorov, Fedor S.; Settipani, Daniel; Melandsø Buan, Marthe Emelie; Sainio, Jani; Ali, Farhan S.M.; Ilatovskii, Daniil; Kallio, Tanja; Nasibulin, Albert G.
     A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
    We report a cathode material based on plasma-treated single-walled carbon nanotubes decorated by RuOx nanoparticles using atomic layer deposition. We have examined cathode performance towards hydrogen evolution reaction by tailoring material wettability, conductivity yielded by plasma treatment, and the catalyst loading. We discuss that nucleation of particles is facilitated by the appearance of carboxylic and hydroxyl groups triggered by oxygen plasma action. The best performance is associated with samples containing RuOx particles of 4–5 nm, which show hydrogen evolution onset potential to be about −5 mV (vs. RHE) in 0.5 M H2SO4 measured at a current density of −1 mA cm−2 and Tafel slope of 47.5 mV/dec. The material possesses stable performance at −10 mA cm−2 with a potential of about −160 mV.
  • Optimization of Optoelectronic Properties of Patterned Single-Walled Carbon Nanotube Films
    (2020-12-09) Mitin, Dmitry; Berdnikov, Yury; Vorobyev, Alexandr; Mozharov, Alexey; Raudik, Sergei; Koval, Olga; Neplokh, Vladimir; Moiseev, Eduard; Ilatovskii, Daniil; Nasibulin, Albert G.; Mukhin, Ivan
     A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
    We propose a novel strategy to enhance optoelectrical properties of single-walled carbon nanotube (SWCNT) films for transparent electrode applications by film patterning. First, we theoretically considered the effect of the conducting pattern geometry on the film quality factor and then experimentally examined the calculated structures. We extend these results to show that the best characteristics of patterned SWCNT films can be achieved using the combination of initial film properties: low transmittance and high conductivity. The proposed strategy allows the patterned layers of SWCNTs to outperform the widely used indium-tin-oxide electrodes on both flexible and rigid substrates.