Abstract
The effect of oxidative stabilization as a mean to modify the carbon texture was essayed in a group of mesophases previous to carbonization at 900 °C with the aim of evaluating the influence on electrochemical performance when used as electrode materials in lithium test cells. X-ray diffraction, optical microscopy and chemical analysis, Fourier-transform infrared spectroscopy have been used to describe the compositional and textural properties of the as-produced parent mesophases, the samples were further treated under air current to stabilize their microstructures and the corresponding carbonized samples at 900 °C. The electrochemical performance was determined by the galvanostatic method and further correlated to the physical–chemical properties and interface resistance of the materials. In all cases, the stabilization process has demonstrated a beneficial effect on the capacity retention in the measured range.
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Acknowledgements
The authors are grateful to CICYT for financial support (Contract MAT2002-00434 and contract MAT2001-1694) and M.C. Mohedano for her technical support. R. Alcántara is indebted to MCYT (programa Ramón y Cajal). A. Concheso is indebted to MCYT for his predoctoral grant.
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Concheso, A., Santamaría, R., Menéndez, R. et al. Effect of oxidative stabilization on the electrochemical performance of carbon mesophases as electrode materials for lithium batteries. J Solid State Electrochem 9, 627–633 (2005). https://doi.org/10.1007/s10008-004-0621-y
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DOI: https://doi.org/10.1007/s10008-004-0621-y