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Electrochemical Li Storage Properties of Carbon-Rich B–C–N Ceramics

Bhat, Shrikant ; Sasikumar, Pradeep ; Molina-Luna, Leopoldo ; Graczyk-Zajac, Magdalena ; Kleebe, Hans-Joachim ; Riedel, Ralf (2016)
Electrochemical Li Storage Properties of Carbon-Rich B–C–N Ceramics.
In: C - Journal of Carbon Research, 2 (2)
doi: 10.3390/c2020009
Artikel, Bibliographie

Kurzbeschreibung (Abstract)

Amorphous BCN ceramics were synthesized via a thermal conversion procedure of piperazine–borane and pyridine–borane. The synthesized BC₂N and BC₄N ceramics contained, in their final amorphous structure, 45 and 65 wt % of carbon, respectively. Elemental analysis revealed 45 and 65 wt % of carbon for BC₂N and BC₄N, respectively. Transmission electron microscopy (TEM) and X-ray diffraction (XRD) confirmed the amorphous nature of studied compounds. Lateral cluster size of carbon crystallites of 7.43 and 10.3 nm for BC₂N and BC₄N, respectively, was calculated from Raman spectroscopy data. This signified a higher order of the carbon phase present in BC₄N. The electrochemical investigation of the low carbon BC₂N composition as anodes for Li-ion batteries revealed initial capacities of 667 and 235 mAh·g⁻¹ for lithium insertion/extraction, respectively. The material with higher carbon content, BC₄N, disclosed better reversible lithium storage properties. Initial capacities of 1030 and 737 mAh·g⁻¹ for lithium insertion and extraction were recovered for carbon-rich BC₄N composition. Extended cycling with high currents up to 2 C/2 D revealed the cycling stability of BC4N electrodes. Cycling for more than 75 cycles at constant current rates showed a stable electrochemical behavior of BC₄N anodes with capacities as high as 500 mAh·g⁻¹.

Typ des Eintrags: Artikel
Erschienen: 2016
Autor(en): Bhat, Shrikant ; Sasikumar, Pradeep ; Molina-Luna, Leopoldo ; Graczyk-Zajac, Magdalena ; Kleebe, Hans-Joachim ; Riedel, Ralf
Art des Eintrags: Bibliographie
Titel: Electrochemical Li Storage Properties of Carbon-Rich B–C–N Ceramics
Sprache: Englisch
Publikationsjahr: 24 März 2016
Verlag: MDPI
Titel der Zeitschrift, Zeitung oder Schriftenreihe: C - Journal of Carbon Research
Jahrgang/Volume einer Zeitschrift: 2
(Heft-)Nummer: 2
DOI: 10.3390/c2020009
Kurzbeschreibung (Abstract):

Amorphous BCN ceramics were synthesized via a thermal conversion procedure of piperazine–borane and pyridine–borane. The synthesized BC₂N and BC₄N ceramics contained, in their final amorphous structure, 45 and 65 wt % of carbon, respectively. Elemental analysis revealed 45 and 65 wt % of carbon for BC₂N and BC₄N, respectively. Transmission electron microscopy (TEM) and X-ray diffraction (XRD) confirmed the amorphous nature of studied compounds. Lateral cluster size of carbon crystallites of 7.43 and 10.3 nm for BC₂N and BC₄N, respectively, was calculated from Raman spectroscopy data. This signified a higher order of the carbon phase present in BC₄N. The electrochemical investigation of the low carbon BC₂N composition as anodes for Li-ion batteries revealed initial capacities of 667 and 235 mAh·g⁻¹ for lithium insertion/extraction, respectively. The material with higher carbon content, BC₄N, disclosed better reversible lithium storage properties. Initial capacities of 1030 and 737 mAh·g⁻¹ for lithium insertion and extraction were recovered for carbon-rich BC₄N composition. Extended cycling with high currents up to 2 C/2 D revealed the cycling stability of BC4N electrodes. Cycling for more than 75 cycles at constant current rates showed a stable electrochemical behavior of BC₄N anodes with capacities as high as 500 mAh·g⁻¹.

Freie Schlagworte: BCN ceramics, Li-ion batteries, rate capability, cycling stability
Fachbereich(e)/-gebiet(e): 11 Fachbereich Material- und Geowissenschaften
11 Fachbereich Material- und Geowissenschaften > Geowissenschaften
11 Fachbereich Material- und Geowissenschaften > Geowissenschaften > Fachgebiet Geomaterialwissenschaft
11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft
11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Elektronenmikroskopie
11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Disperse Feststoffe
Hinterlegungsdatum: 11 Apr 2016 12:19
Letzte Änderung: 10 Feb 2022 06:27
PPN:
Sponsoren: Authors acknowledge the financial support from the German Research Foundation (DFG) within SPP 1473/JP8, SPP1236 programs, and the German federal state of Hessen through its excellence program LOEWE “RESPONSE”., VSP acknowledge the financial support from the EU through the MC ITN FUNEA, CT-264873., The TEM employed for this work was partially funded by the German Research Foundation (DFG/INST163/2951).
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