ELECTRODE FOR LITHIUM ION SECONDARY BATTERY

摘要

PROBLEM TO BE SOLVED: To provide a means preventing electrocrystallization of lithium on the surface of an electrode and micro short circuit in the electrode for a lithium ion secondary battery.

SOLUTION: The electrode for the lithium ion secondary battery has a current collector, and a negative electrode active material layer formed on the current collector and containing a negative electrode active material. Absorption of lithium in the negative electrode active material layer in charging starts in earlier stages in a nearer place to the current collector.

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