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

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

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
MoE publication typeA1 Journal article-refereed

Keywords

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

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