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@ARTICLE{Gehring:903688,
      author       = {Gehring, Markus and Kutsch, Tobias and Camara, Osmane and
                      Merlen, Alexandre and Tempel, Hermann and Kungl, Hans and
                      Eichel, Rüdiger-A},
      title        = {{T}he effect of cobalt on morphology, structure, and {ORR}
                      activity of electrospun carbon fibre mats in aqueous
                      alkaline environments},
      journal      = {Beilstein journal of nanotechnology},
      volume       = {12},
      issn         = {2190-4286},
      address      = {Frankfurt, M.},
      publisher    = {Beilstein-Institut zur Förderung der Chemischen
                      Wissenschaften},
      reportid     = {FZJ-2021-05337},
      pages        = {1173 - 1186},
      year         = {2021},
      abstract     = {An innovative approach for the design of air electrodes for
                      metal–air batteries are free-standing scaffolds made of
                      electrospun polyacrylonitrile fibres. In this study,
                      cobalt-decorated fibres are prepared, and the influence of
                      carbonisation temperature on the resulting particle
                      decoration, as well as on fibre structure and morphology is
                      discussed. Scanning electron microscopy, Raman spectroscopy,
                      X-ray diffraction, X-ray photoelectron spectroscopy,
                      elemental analysis, and inductively coupled plasma optical
                      emission spectrometry are used for characterisation. The
                      modified fibre system is compared to a benchmark system
                      without cobalt additives. Cobalt is known to catalyse the
                      formation of graphite in carbonaceous materials at elevated
                      temperatures. As a result of cobalt migration in the
                      material the resulting overall morphology is that of
                      turbostratic carbon. Nitrogen removal and nitrogen-type
                      distribution are enhanced by the cobalt additives. At lower
                      carbonisation temperatures cobalt is distributed over the
                      surface of the fibres, whereas at high carbonisation
                      temperatures it forms particles with diameters up to 300 nm.
                      Free-standing, current-collector-free electrodes assembled
                      from carbonised cobalt-decorated fibre mats display
                      promising performance for the oxygen reduction reaction in
                      aqueous alkaline media. High current densities at an
                      overpotential of 100 mV and low overpotentials at current
                      densities of 333 μA·cm−2 were found for all electrodes
                      made from cobalt-decorated fibre mats carbonised at
                      temperatures between 800 and 1000 °C.},
      cin          = {IEK-9},
      ddc          = {620},
      cid          = {I:(DE-Juel1)IEK-9-20110218},
      pnm          = {1223 - Batteries in Application (POF4-122)},
      pid          = {G:(DE-HGF)POF4-1223},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {34760431},
      UT           = {WOS:000798057800001},
      doi          = {10.3762/bjnano.12.87},
      url          = {https://juser.fz-juelich.de/record/903688},
}