INVESTIGATION OF GRAPHITE COATED WITH PHENOL RESIN AS ANODE FOR LITHIUM ION BATTERY

Phenol resin / graphite composite was prepared by mixing graphite and phenol resin in methanol, carbonizing at 1 000 ℃ under N 2 after removing solvent. The surface morphology of resultant composites was observed by SEM. The constant current charge discharge properties of composites were investigated. The results showed that the disordered structure of phenol resin carbon on the surface of graphite can successfully protect the graphite from exfoliation to improve its cyclic performances. After ten time cycles, the reversible capacity of composite prepared by sediment was 326 mAh·g -1 which was 45 mAh·g -1 higher than that of graphite (281 mAh·g -1 ) did, remaining 96.2 % of its first reversible capacity.