MANUFACTURING METHOD OF ELECTRODE FOR LITHIUM ION SECONDARY BATTERY

摘要

PROBLEM TO BE SOLVED: To achieve both an improvement in weight accuracy and a reduction in resistance.SOLUTION: A manufacturing method of an electrode for a lithium ion secondary battery proposed herein includes the steps of: pattern-coating a binder liquid 21d on a collector 12 to form a binder coat layer 16; and supplying granulated particles 32 on the binder coat layer 16. The binder coat layer 16 is formed on the collector 12 intermittently such that a band-shaped coated portion 16a and a band-shaped uncoated portion 16b are alternately adjacent to each other. The width t1 of the coated portion 16a, the width t2 of the uncoated portion 16b and an average particle size R of the granulated particles 32 satisfy the relationships of 0.53R≤t1≤10R, 0.66R≤t2≤10R, and 0.2≤t1/t2≤3.75.SELECTED DRAWING: Figure 3