An Oxygen Reduction Study of Graphene-Based Nanomaterials of Different Origin

Lilloja, Jaana; Kibena-Põldsepp, Elo; Merisalu, Maido; Rauwel, Protima; Matisen, Leonard; Niilisk, Ahti; Cardoso, Eduardo S. F.; Maia, Gilberto; Sammelselg, Väino; Tammeveski, Kaido

doi:10.3390/catal6070108

Open AccessArticle

An Oxygen Reduction Study of Graphene-Based Nanomaterials of Different Origin

by

Jaana Lilloja

¹,

Elo Kibena-Põldsepp

¹,

Maido Merisalu

^1,2,

Protima Rauwel

²,

Leonard Matisen

²,

Ahti Niilisk

²,

Eduardo S. F. Cardoso

³,

Gilberto Maia

³

,

Väino Sammelselg

^1,2

and

Kaido Tammeveski

^1,*

¹

Institute of Chemistry, University of Tartu, Ravila 14a, 50411 Tartu, Estonia

²

Institute of Physics, University of Tartu, W. Ostwald Str. 1, 50411 Tartu, Estonia

³

Institute of Chemistry, UFMS, CP 549, Campo Grande MS 79070-900, Brazil

^*

Author to whom correspondence should be addressed.

Catalysts 2016, 6(7), 108; https://doi.org/10.3390/catal6070108

Submission received: 13 June 2016 / Revised: 8 July 2016 / Accepted: 12 July 2016 / Published: 22 July 2016

(This article belongs to the Special Issue Carbon Materials for Green Catalysis)

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Abstract

The aim of this study is to compare the electrochemical behaviour of graphene-based materials of different origin, e.g., commercially available graphene nanosheets from two producers and reduced graphene oxide (rGO) towards the oxygen reduction reaction (ORR) using linear sweep voltammetry, rotating disc electrode and rotating ring-disc electrode methods. We also investigate the effect of catalyst ink preparation using two different solvents (2-propanol containing OH⁻ ionomer or N,N-dimethylformamide) on the ORR. The graphene-based materials are characterised by scanning electron microscopy, transmission electron microscopy, Raman spectroscopy and X-ray photoelectron spectroscopy. Clearly, the catalytic effect depends on the origin of graphene material and, interestingly, the electrocatalytic activity of the catalyst material for ORR is lower when using the OH⁻ ionomer in electrode modification. The graphene electrodes fabricated with commercial graphene show better ORR performance than rGO in alkaline solution.

Keywords: graphene; reduced graphene oxide; oxygen reduction; electrocatalysis; fuel cells

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MDPI and ACS Style

Lilloja, J.; Kibena-Põldsepp, E.; Merisalu, M.; Rauwel, P.; Matisen, L.; Niilisk, A.; Cardoso, E.S.F.; Maia, G.; Sammelselg, V.; Tammeveski, K. An Oxygen Reduction Study of Graphene-Based Nanomaterials of Different Origin. Catalysts 2016, 6, 108. https://doi.org/10.3390/catal6070108

AMA Style

Lilloja J, Kibena-Põldsepp E, Merisalu M, Rauwel P, Matisen L, Niilisk A, Cardoso ESF, Maia G, Sammelselg V, Tammeveski K. An Oxygen Reduction Study of Graphene-Based Nanomaterials of Different Origin. Catalysts. 2016; 6(7):108. https://doi.org/10.3390/catal6070108

Chicago/Turabian Style

Lilloja, Jaana, Elo Kibena-Põldsepp, Maido Merisalu, Protima Rauwel, Leonard Matisen, Ahti Niilisk, Eduardo S. F. Cardoso, Gilberto Maia, Väino Sammelselg, and Kaido Tammeveski. 2016. "An Oxygen Reduction Study of Graphene-Based Nanomaterials of Different Origin" Catalysts 6, no. 7: 108. https://doi.org/10.3390/catal6070108

APA Style

Lilloja, J., Kibena-Põldsepp, E., Merisalu, M., Rauwel, P., Matisen, L., Niilisk, A., Cardoso, E. S. F., Maia, G., Sammelselg, V., & Tammeveski, K. (2016). An Oxygen Reduction Study of Graphene-Based Nanomaterials of Different Origin. Catalysts, 6(7), 108. https://doi.org/10.3390/catal6070108

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

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An Oxygen Reduction Study of Graphene-Based Nanomaterials of Different Origin

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