| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a positive electrode plate and a high capacity nonaqueous secondary cell capable of having a high capacity by reducing a binding material and a thickener, having a long life by reducing variations of coating weight, and improving overcharge safety by rationalizing a hole volume ratio of a plied timber using a uniform dispersion effect of electrode plate structuring materials by improving a blend method of a conductive material, a binding material, and a thickener as structuring materials other than active materials contributing to a cell capacity. <P>SOLUTION: An electrode plate is structured by kneading and dispersing an active material A, a conductive material B, a rubber particle binding material C having an acrylate unit, and a thickener D of a water soluble polymer with water. After the active material A and the conductive material B are moistened in a solution of the thickener D and a first-stage kneading is processed, then a binding material C and water are added and kneaded, the positive electrode plate is formed so that the binding material C be 0.2 to 1.4 weight parts per 100 weight parts of the active material A, and a hole volume ratio of the plied timber from 18 to 28%. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
