| abstract |
The present invention relates to a non-aqueous lithium storage element which does not lower the electron conductivity of a positive electrode containing a lithium compound, has high output and high energy density, is excellent in high load charge/discharge cycle characteristics, and has a non-porous shape. The potential change of the positive electrode active material layer applied to both surfaces of the positive electrode current collector is adjusted to suppress the gas generated by the excessive decomposition of the lithium compound remaining in the positive electrode at a high temperature and a high voltage, and the positive electrode set having a non-porous shape is used. The electric body and the non-porous negative electrode current collector can alleviate the existence of the ion concentration in the electrolyte in the high load charge and discharge cycle, suppress the increase in resistance, and suppress the decomposition of the lithium compound in the positive electrode at a high voltage. In addition, when the average particle diameter of the lithium compound in the electric storage device is set to X1, 0.1 μm ≦X1 ≦ 10.0 μm, and when the average particle diameter of the positive electrode active material is Y1, 2.0 μm ≦ Y1 ≦ 20.0 Mm, X1 < Y1. |