| 摘要 |
The present invention provides an active material sheet and an electrode using the same, capable of increasing an electrical capacity by increasing the density of particles of an active material. The active material sheet includes the active material which stores electric charges and a binder which bonds the active material. 90% or more of the active material has a particle diameter (d) which satisfies d<=20um in an observation range in the active material. Also, the active material includes a first group and a second group. The first group of the active material has a particle diameter (d) which satisfies d<=5um and a circularity between 0.850 and 1.000. The second group of the active material has a particle diameter (d) which satisfies 5um<d<=20um and a circularity between 0.500 and 0.850. |
