RECHARGEABLE CARBON ANODE

The electrochemical intercalation of lithium into carbon materials is discussed in terms of the effect of different parameters of the crysta l structure and surface modifications of carbon to reduce the reaction of carbon with electrolyte solvents. The lithium intercalation capaci ty in the carbon materials prepared from the same raw materials and by the same preparation methods depends on the heat-treatment temperatur e. A higher capacity is obtained in the carbons prepared at higher tem peratures, which have a graphite structure. The graphite is more react ive in reaction with organic solvents. The reaction of the graphite wi th solvents is reduced by a pretreatment of the carbon materials with acid and hydrazine.