AN ELECTRON-SPIN-RESONANCE STUDY OF LITHIUM CHARGED CARBON ELECTRODES

Electron-spin-resonance studies of pristine, Li-charged and Li-dischar ged carbon electrodes have been carried out. Different behaviors were observed for those samples. The ESR line width of Li-charged carbon el ectrode becomes narrow and spin concentration increases in comparison with pristine carbon electrode. The spin concentration of Li-discharge d carbon electrode is still higher than that of pristine carbon electr ode and a new ESR absorption with narrow line width appears. A possibl e explanation will be given based on the electrochemical data, SIMS an d FTIR analysis results.