ELECTROCHEMICAL SPECTROSCOPY AND STRUCTURAL STUDY OF THE NA-C-60 SYSTEM

Electrochemical intercalation of Na in solid C-60 has been performed u sing polymer electrolytes and very slow rate stepwise voltamperometry. Five reduction steps are observed as on the LixC60 system we studied previously, but with appearance of solubility of the compound beyond t he first one. That paper focus on that first step which presents the s ame hysteresis and X-rays diffraction pattern as in LixC60 where it wa s shown to correspond to Li0.5C60 formation. The fact that the polymer electrolyte could play a role is discussed.