Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4767787 | Electrochimica Acta | 2016 | 28 Pages |
Abstract
N-doped graphene-wrapped carbon nanoparticles (NGCNPs) are in situ synthesized by a facile bottom-up method. The heat treatment boosts the conversion of N-containing species from the pyrollic N to graphitic N and pyridinic N, thus improving the electrocatalytic activity towards the oxygen reduction reaction (ORR). The physical characterization including X-ray photoelectron spectroscopy, Raman spectra, specific surface area and charge transfer resistance indicates that 600 °C is a pivotal temperature for remarkably improving the electrochemical activity for ORR in terms of onset potential, half-wave potential, electron transfer number and peroxide yields.
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Authors
Ruguang Ma, Yao Zhou, Pengxi Li, Yongfang Chen, Jiacheng Wang, Qian Liu,