| abstract |
The present invention provides a means capable of compensating an irreversible capacity while preventing an excessive exothermic reaction between lithium and a negative electrode active material and suppressing an increase in internal resistance of the negative electrode. A negative electrode for a lithium ion secondary battery of the present invention includes a current collector and a negative electrode active material layer including a negative electrode active material formed on a surface of the current collector. A protective layer containing an insulating inorganic material, a conductive material, and lithium particles is further disposed on the surface of the negative electrode active material layer, and a part of the surface of the lithium particles is exposed from the surface of the protective layer. It is characterized in that [Selection] Figure 1 |