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
Dies ist die neueste Version dieses Eintrags.
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 |
| Zugehörige Links: | |
| 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: | 03 Jul 2024 02:23 |
| 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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Verfügbare Versionen dieses Eintrags
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Electrochemical Li Storage Properties of Carbon-Rich B–C–N Ceramics. (deposited 09 Feb 2022 13:19)
- Electrochemical Li Storage Properties of Carbon-Rich B–C–N Ceramics. (deposited 11 Apr 2016 12:19) [Gegenwärtig angezeigt]
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