Raman spectroscopic and structural studies of heat-treated graphites for lithium-ion batteries
Goers, D., Buqa, H., Hardwick, L., Würsig, A. and Novák, P. (2003) Raman spectroscopic and structural studies of heat-treated graphites for lithium-ion batteries. Ionics, 9, (3-4), 258-265.
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Description/Abstract
Standard graphite TIMREX(R) SLX 50 was oxidised at 500-800 °C under air atmosphere in a muffle and a rotary furnace. Scanning Electron Microscopy (SEM), Raman spectroscopy, and X-Ray Powder Diffraction (XRD) were used to study the changes in surface morphology and crystallinity. The results show a slight increase of the La value and a decrease of the rhombohedral fraction with increased heat-treatment temperature (HTT). XRD measurements show no significant change in La values within the bulk of graphite samples. Above 700 °C SEM images of graphite reveals holes and cavities, whereas heat-treatment temperatures below 700 °C do not significantly affect graphite materials parameters.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | pyrolyzed sugar carbons, anode materials, surface modification, electrode materials, insertion, spectrum |
| Related URLs: | http://ionics.org/index.php?id=30 |
| Subjects: | T Technology > T Technology (General) Q Science > QD Chemistry |
| Divisions: | University Structure - Pre August 2011 > School of Chemistry |
| ePrint ID: | 19964 |
| URI: | http://eprints.soton.ac.uk/id/eprint/19964 |
| Deposited On: | 24 Feb 2006 |
| Last Modified: | 01 Jun 2011 12:03 |
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