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Abstract
Herein we present a study on polymer-derived silicon oxycarbide (SiOC)/graphite composites for a potential application as an electrode in high power energy storage devices, such as Lithium-Ion Capacitor (LIC). The composites were processed using high power ultrasound-assisted sol-gel synthesis followed by pyrolysis. The intensive sonication enhances gelation and drying process, improving the homogenous distribution of the graphitic flakes in the preceramic blends. The physicochemical investigation of SiOC/graphite composites using X-ray diffraction, 29Si solid state NMR and Raman spectroscopy indicated no reaction occurring between the components. The electrochemical measurements revealed enhanced capacity (by up to 63%) at high current rates (1.86 A g−1) recorded for SiOC/graphite composite compared to the pure components. Moreover, the addition of graphite to the SiOC matrix decreased the value of delithiation potential, which is a desirable feature for anodes in LIC.
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Authors (4)
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Magdalena Graczyk-Zajac
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Grzegorz Trykowski doktor
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- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
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Materials
no. 13,
ISSN: 1996-1944 - Language:
- English
- Publication year:
- 2020
- Bibliographic description:
- Knozowski D., Graczyk-Zajac M., Trykowski G., Wilamowska-Zawłocka M.: Silicon Oxycarbide-Graphite Electrodes for High-Power Energy Storage Devices// Materials -Vol. 13,iss. 19 (2020), s.4302-
- DOI:
- Digital Object Identifier (open in new tab) 10.3390/ma13194302
- Verified by:
- Gdańsk University of Technology
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