| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an estimation method of a distribution state of a binder in a mixture thickness direction. <P>SOLUTION: Provided a width direction of an electrode plate for a nonaqueous electrolyte secondary battery is an X-direction, a length direction a Y-direction, and a thickness direction a Z-direction, if an average value of intensity data in the X-direction within a micro range ΔZ in the Z-direction is ΔI, an average value of the intensity data in the total X-Y face range is I, and their standardized data ΔI/I is I<SB>st</SB>, a distribution state of the binder in the Z-direction is evaluated by the standardized data I<SB>st</SB>toward the Z-direction, based on intensity value data obtained from qualitative analysis and quantitative analysis of the binder constituent elements with an EPMA (an electron beam probe micro analyzer), as to a distribution of constituent elements of the binder in a cross section of the electrode plate at an X-Y face part at an optional point in the Y-direction of the electrode plate. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
