NEGATIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY, AND ITS MANUFACTURING METHOD

摘要

PROBLEM TO BE SOLVED: To improve initial charge and discharge efficiency in a lithium secondary battery using active material particles consisting of silicon and/or silicon alloy as a negative electrode active material.

SOLUTION: The lithium secondary battery electrode is obtained by arranging and sintering a mixture layer containing active material particles consisting of silicon and/or silicon alloy, a conductive powder, and a binder on a current collector consisting of a conductive metal foil. The degree of dispersion as defined in a formula (1) in the mixture layer is 1.0 or less.

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