Patent ID: 9373844
Filing Date: 2016-06-21
CPC Classification: H01B,H01M,Y02E

Claim Text:
1. A positive electrode active substance comprising a lithium-containing metal oxide represented by the following general formula (1): wherein M represents an element selected from Sn, Zr, Y, and Al; 0<x<1; and 0<y<1, wherein the lithium-containing metal oxide has a lattice constant and a half value width of a diffraction peak of a (011) plane, providing a capacity retaining ratio of higher than 81.0% after 100 times of charging and discharging of a cell having a positive electrode comprising the lithium-containing metal oxide, an electrolyte, and a counterelectrode; wherein the positive electrode consists about 10 wt % of acetylene black, about 10 wt % of fluororesin, and about 80 wt % of lithium-containing metal oxide; and is 20 mg in weight; the electrolyte consists 50 vol % of ethylene carbonate into which 1 mol/liter of LiPF the cell is charged and discharged 100 times under the following conditions: in an environment of 25° C., with a charging and discharging current of 0.1 mA, with an electric potential of 4.0 V at the end of the charge of the cell, and with an electric potential of 2.0 V at the end of the discharge of the cell.