US 12,756,021 B2 · Electrode for lithium secondary battery and manufacturing method thereof

Abstract

Disclosed herein relates to an electrode for a lithium secondary battery and a manufacturing method thereof, and since the electrode for a lithium secondary battery is provided with an auxiliary coating layer containing inorganic particles, a phenolic compound, and a binder at the end of an electrode mixture layer containing an electrode active material, thereby improving energy density of the battery due to an improvement in thickness deviation at the end of the electrode mixture layer, and preventing lithium from being precipitated at the end of the electrode, especially the negative electrode, due to increase in the adhesive strength of the separator at the end of the electrode, it has an advantage of excellent safety.

Claims15

Dependent claims

An electrode for a lithium secondary battery, comprising:

an electrode current collector;
an electrode mixture layer provided on the electrode current collector, and containing an electrode active material;
and
an auxiliary coating layer provided on the electrode current collector, and located at the end of an electrode mixture layer,
wherein the electrode mixture layer has an absolute value (|a-b|) of 8 mm or less, wherein a is a length of a surface of the electrode mixture layer which is in contact with the electrode current collector, and b is a length of an opposite surface of the electrode mixture layer which is not in contact with the electrode current collector, and
wherein the auxiliary coating layer contains an inorganic particle, a phenolic compound, and a binder.

3 more elements

Dependencies are inferred from the claim text.

Electrode for lithium secondary battery and manufacturing method thereof

Life of this patent

Electrode for lithium secondary battery and manufacturing method thereof

Life of this patent

Abstract

Claims15