High Performance Hydrogen Evolution Reaction Catalyst Based on Single-Walled Carbon Nanotubes Decorated by RuOx Nanoparticles

Fedor S. Fedorov, Daniel Settipani, Marthe Emelie Melandsø Buan, Jani Sainio, Farhan S.M. Ali, Daniil Ilatovskii, Tanja Kallio, Albert G. Nasibulin

    Research output: Contribution to journalArticlepeer-review

    4 Citations (Scopus)

    Abstract

    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.

    Original languageEnglish
    Pages (from-to)2651-2659
    Number of pages9
    JournalChemElectroChem
    Volume7
    Issue number12
    DOIs
    Publication statusPublished - 17 Jun 2020

    Keywords

    • atomic layer deposition
    • carbon nanotubes
    • hydrogen evolution reaction
    • ruthenium oxide
    • wettability

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