| 摘要 |
PURPOSE:To increase a cycle life of charge and discharge, and make a stable high capacity, that is, a discharge of a large current possible by providing with a negative electrode body consisting of carrier of a certain carbonaceous material and a thin layer of active material formed on the surface of the carrier on the separator side. CONSTITUTION:A negative electrode body is provided consisting of carrier of carbonaceous material carrying active material of lithium or alkali metal mainly including lithium, for which atomic ratio of hydrogen/carbon is less than 0.15, value G as shown in equation I is less than 2.5 in Raman spectrum analysis using argon ion laser of wavelength of 5145Angstrom , spacing (d002) is 3.37Angstrom or over for face (002) in X-ray wide angle diffraction method, and size of crystallite (Lc) is 150Angstrom or under in the direction of C-axis, and a thin layer of active material formed on the surface of the carrier on the separator side. Thus a compact nonaqueous solvent secondary battery with a long cycle life of charge and discharge and a stable high capacity can be obtained. |
