| 摘要 |
PURPOSE: To enhance utilization efficiency of an active material by providing an electrode plate for a nonaqueous electrolyte secondary battery which is composed of a collector having a paint film containing a powder-like active material, a conductive material and a binding agent on a surface and in which this binding agent has electric conductivity having a specific range value. CONSTITUTION: A discharge curve, for example, at 100 cycle time of a battery of respective cells constituted by using an electrode plate manufactured in examples 1, 2 and 3 and a reference, is shown by setting discharge capacity of the example 1 as 100%. Then, a discharge curve of a battery constituted by using the electrode plate manufactured in the examples 1 to 3 shows a larger value, in which reduction in electric potential becomes small just after discharge, that is, polarization is small and charging capacity is not less than 90% to 70% of the reference, than a charging characteristic of the battery constituted by using the electrode plate manufactured in the reference. That is, the electrode plate is composed of a collector having a paint film containing a powder-like active material, a conductive agent and a binding agent on a surface, and since the binding agent has electric conductivity of 10<-7> to 10<2> S/cm, utilization efficiency of the active material is enhanced, and a high battery characteristic is obtained. |
