ELECTRODE FOR SECONDARY BATTERY AND METHOD OF MANUFACTURING ELECTRODE

摘要

PROBLEM TO BE SOLVED: To solve such a problem that the thickness of a mixture layer becomes non-uniform after press due to variation in the coating amount of the mixture layer, and to provide an electrode plate for a lithium ion secondary battery in which the thickness of the mixture layer formed on a collector has high uniformity and the film thickness can be adjusted easily.

SOLUTION: Spherical spacer particles are added to the mixture layer formed on a collector, and a mixture layer having an arbitrary thickness is obtained by controlling the particle size. When the spacer particles are added, thickness of the mixture layer is less susceptible to variation in coating amount and a mixture layer having an uniform film thickness after press can be obtained. Mean particle diameter of the spacer particles is preferably in the range from t-8 to t-12 μm for the film thickness t of the mixture layer.

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