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Issue 26, 2018, Issue in Progress
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Advantage of semi-ionic bonding in fluorine-doped carbon materials for the oxygen evolution reaction in alkaline media

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Abstract

Metal-free carbonaceous catalysts have potential applications for oxygen evolution reaction (OER) devices because of their low-cost and abundant supply. We report that fluorine-doped carbon black is an active catalyst for OER. Fluorine-doped carbon black (F-KB) is simply synthesized by the pyrolysis of KETJENBLACK (KB) as carbon substrate with Nafion as fluorine precursor. As a result, the OER activity of F-KB is significantly higher than that of pristine KB in alkaline media. The OER catalytic activity of F-KB is found to be dependent on the quantity and characteristics of carbon-fluorine bonding (C–F) which can be controlled by the pyrolysis temperature. It is further found that the OER activity depends on the quantity of semi-ionic C–F bonds, but not covalent C–F bonds. This result proves the importance of carbon atoms with semi-ionic C–F bonds as the active sites for OER.

Graphical abstract: Advantage of semi-ionic bonding in fluorine-doped carbon materials for the oxygen evolution reaction in alkaline media

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Publication details

The article was received on 24 Feb 2018, accepted on 11 Apr 2018 and first published on 17 Apr 2018


Article type: Paper
DOI: 10.1039/C8RA01636D
Citation: RSC Adv., 2018,8, 14152-14156
  • Open access: Creative Commons BY-NC license
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    Advantage of semi-ionic bonding in fluorine-doped carbon materials for the oxygen evolution reaction in alkaline media

    J. Kim, R. Zhou, K. Murakoshi and S. Yasuda, RSC Adv., 2018, 8, 14152
    DOI: 10.1039/C8RA01636D

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