NEGATIVE ELECTRODE FOR NONAQUEOUS-ELECTROLYTE SECONDARY BATTERY AND BATTERY EMPLOYING THE SAME

摘要

A negative electrode comprising 100 parts by weight of a carbonaceous material having an irreversible capacity and 20 to 150 parts by weight of a lithium-containing composite nitride represented by the general formula Li3-XMXN (M is at least one member selected from the group consisting of cobalt, nickel, manganese, and copper; and 0.2 ≤ X ≤ 0.8). The nitride compensates for the irreversible capacity of the carbonaceous material. Thus, the large capacity possessed by amorphous carbon or lowly crystalline carbon can be utilized to the highest degree and a high-capacity nonaqueous-electrolyte secondary battery with excellent cycle reversibility can be provided.