LITHIUM SECONDARY CELL AND METHOD FOR MANUFACTURING THE SAME

摘要

A lithium secondary cell having positive and negative plates containing an active material capable of absorbing/releasing lithium ions, wherein the negative plate is a sintered body containing 50 to 99 weight% of silicon and 1 to 50 weight% of a carbonaceous material and has a conductivity of more than 1 S/cm. Therefore, the pack density of the active material is increased, and the capacity per unit volume is increased. The conductivity of the negative plate of more than 1 S/cm results in imparting a large capacity and an excellent cycle characteristic to the secondary cell.