NONAQUEOUS ELECTROLYTE SECONDARY CELL

摘要

PURPOSE:To enlarge the discharge capacity of a cell so as to improve it's charge-discharge cycle characteristics by constructing the positive electrode with an electro-conductive macromolecule compound can be doped with anions reversively and the negative electrode with a carbide obtained from a condensed macromolecule compound containing aromatic compound and nitrogen atoms. CONSTITUTION:The negative electrode of a cell is constructed with a material composed of at least partially graphitized carbide obtained from a condensed macromolecule compound containing aromatic compound and nitrogen, and it is desirable that the material has a value less than 0.35 in ratio of number of hydrogen atoms to that of carbon atoms, and a structure of larger than 3.37Angstrom in interplanar spacing of carbon (002) plane measured with x-ray diffraction. And an electro-conductive compound can be doped with anions electrochemically is used for the positive electrode. Thereby a nonaqueous electrolyte secondary cell having large discharge capacity and excellent charge-discharge cycle characteristics can be obtained.