| abstract |
In a lithium ion secondary battery, there is provided a means capable of improving output characteristics while minimizing a decrease in capacity per volume accompanying an increase in the amount of conductive aid used. A current collector, an active material formed on the current collector, having an average particle diameter of more than 1 μm and 5 μm or less, and a BET specific surface area of 1 to 5 m 2 / g, and the active material It is an electrode for batteries containing the active material layer containing the conductive support agent which is a content of 3-50 mass% with respect to 100 mass%. [Selection] Figure 1 |