Authors: A Concheso R Santamaría R Menéndez J M JiménezMateos R Alcántara P Lavela J L Tirado
Publish Date: 2005/01/28
Volume: 9, Issue: 9, Pages: 627-633
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 Xray diffraction optical microscopy and chemical analysis Fouriertransform infrared spectroscopy have been used to describe the compositional and textural properties of the asproduced 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 rangeThe authors are grateful to CICYT for financial support Contract MAT200200434 and contract MAT20011694 and MC 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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