Oxygen Electrocatalysis on High-Surface Area Non-Pt Metal Modified Carbon Catalysts. (11th February 2015)

• Record Type: Journal Article
• Authors: Härk, Eneli; Jäger, Rutha; Kasatkin, Piia Ereth; Steinberg, Vahur; Romann, Thomas; Möller, P; Kanarbik, R; Aruväli, J; Kirsimäe, K; Lust, Enn
• Is Part Of: ECS transactions. Volume 64:Number 36(2014)
• Page Start: 11
• Page End: 21
• Publication Date: 2015-02-11
• Subjects: Electrochemistry -- Periodicals; Electrochemistry; Periodicals; Electronic journals; Electronic journal; 541.37
• DOI: 10.1149/06436.0011ecst
• Languages: English
• ISSNs: 1938-5862

Abstract

Abstract : Series of carbon supported non-noble d-metal Fe or d-metal-nitrogen (Fe-N- or Co-N-) nanocluster activated electrocatalysts have been synthesized by sodium borohydride reduction method. Synthesized d-metal-nitrogen carbon catalysts were studied using X-ray diffraction, scanning electron microscopy, time of flight secondary ion mass-spectrometry and Raman spectroscopy methods. The electrochemical parameters of synthesized catalysts were investigated in alkaline media using cyclic voltammetry and rotating disk electrode methods. The high catalytic activity toward oxygen electroreduction reaction was demonstrated and found to be increasing in the following order: Fe-Vulcan; Co-N-Vulcan; Co-N-C(Mo2 C); Fe-N-C(Mo2 C). The possibility to replace the Pt metal catalyst with non-noble metal–nitrogen carbon electrocatalyst has been discussed.