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Promoting effect of nitrogen doping on carbon nanotube-supported RuO2 applied in the electrocatalytic oxygen evolution reaction

Kunpeng Xie (Institutionen för kemi och kemiteknik, Kemisk reaktionsteknik) ; W. Xia ; J. Masa ; F. Yang ; P. Weide ; W. Schuhmann ; M. Muhler
Journal of Energy Chemistry (2095-4956). Vol. 25 (2016), 2, p. 282-288.
[Artikel, refereegranskad vetenskaplig]

RuO2 nanoparticles supported on multi-walled carbon nanotubes (CNTs) functionalized with oxygen (OCNTs) and nitrogen (NCNTs) were employed for the oxygen evolution reaction (OER) in 0.1 M KOH. The catalysts were synthesized by metal-organic chemical vapor deposition using ruthenium carbonyl (Ru3(CO)12) as Ru precursor. The obtained RuO2/OCNT and RuO2/NCNT composites were characterized using TEM, H2-TPR, XRD and XPS in order probe structure-activity correlations, particularly, the effect of the different surface functional groups on the electrochemical OER performance. The electrocatalytic activity and stability of the catalysts with mean RuO2 particle sizes of 13-14 nm was evaluated by linear sweep voltammetry, cyclic voltammetry, and chronopotentiometry, showing that the generation of nitrogen-containing functional groups on CNTs was beneficial for both OER activity and stability. In the presence of RuO2, carbon corrosion was found to be significantly less severe.

Nyckelord: Chemical vapor deposition , Nitrogen-doped carbon nanotubes , Oxygen evolution reaction , Ruthenium dioxide

Denna post skapades 2016-05-11. Senast ändrad 2016-10-18.
CPL Pubid: 236243


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Institutionen för kemi och kemiteknik, Kemisk reaktionsteknik



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