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
Article
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.
| Item Type: | Article |
|---|---|
| Erschienen: | 2016 |
| Creators: | Bhat, Shrikant ; Sasikumar, Pradeep ; Molina-Luna, Leopoldo ; Graczyk-Zajac, Magdalena ; Kleebe, Hans-Joachim ; Riedel, Ralf |
| Type of entry: | Bibliographie |
| Title: | Electrochemical Li Storage Properties of Carbon-Rich B–C–N Ceramics |
| Language: | English |
| Date: | 24 March 2016 |
| Publisher: | MDPI |
| Journal or Publication Title: | C - Journal of Carbon Research |
| Volume of the journal: | 2 |
| Issue Number: | 2 |
| DOI: | 10.3390/c2020009 |
| 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. |
| Uncontrolled Keywords: | BCN ceramics, Li-ion batteries, rate capability, cycling stability |
| Divisions: | 11 Department of Materials and Earth Sciences 11 Department of Materials and Earth Sciences > Earth Science 11 Department of Materials and Earth Sciences > Earth Science > Geo-Material-Science 11 Department of Materials and Earth Sciences > Material Science 11 Department of Materials and Earth Sciences > Material Science > Advanced Electron Microscopy (aem) 11 Department of Materials and Earth Sciences > Material Science > Dispersive Solids |
| Date Deposited: | 11 Apr 2016 12:19 |
| Last Modified: | 10 Feb 2022 06:27 |
| PPN: | |
| Funders: | 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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