Abstract: The present invention relates to a secondary battery comprising a cathode, an anode and a separator interposed between the cathode and the anode, wherein the anode comprises an anode current collector and an anode mixture layer formed on at least one surface of the anode current collector, the anode mixture layer comprises an anode active material, a binder, and a conductive material, a loading amount of the anode mixture layer is 5 mg/cm2 to 15 mg/cm2, and value R of the anode mixture layer is 3,000 or less, wherein R means (permeability of the anode mixture layer)×(current density of a battery)2. According to the present invention, an overvoltage phenomenon of an anode surface and the deposition of lithium metal caused thereby can be prevented so that charging can be performed with a higher current, and thus rapid charging performance is improved, and lifespan is excellent even in the same current.

Abstract: The present invention relates to a secondary battery comprising a cathode, an anode and a separator interposed between the cathode and the anode, wherein the anode comprises an anode current collector and an anode mixture layer formed on at least one surface of the anode current collector, the anode mixture layer comprises an anode active material, a binder, and a conductive material, a loading amount of the anode mixture layer is 5 mg/cm2 to 15 mg/cm2 and value R of the anode mixture layer is 3,000 or less, wherein R means (permeability of the anode mixture layer)×(current density of a battery)2. According to the present invention, an overvoltage phenomenon of an anode surface and the deposition of lithium metal caused thereby can be prevented so that charging can be performed with a higher current, and thus rapid charging performance is improved, and lifespan is excellent even in the same current.

Abstract: A method of manufacturing a dry electrode sheet for a secondary battery includes providing a dry electrode composition including an electrode active material and a binder, kneading the dry electrode composition, and manufacturing an electrode sheet by calendering the kneaded dry electrode composition.

Abstract: Provided is a primer composition including a thickener that contains at least one functional group selected from the group consisting of a hydroxyl group and a carboxyl group. The primer composition includes a thickener undissolved residue of 0.05 wt % or less based on the total solid weight thereof; an anode and a secondary battery including the same. A method for manufacturing the anode is also provided.

Abstract: The present invention provides a fabrication method of a multilayer electrode for a secondary battery including: (a) preparing two or more electrode slurries each containing an electrode active material, a binder, and a solvent and heating at least one electrode slurry selected from the prepared two or more electrode slurries to a temperature lower than a boiling point (Tb) of the solvent contained in the selected electrode slurry; (b) coating the two or more electrode slurries on a current collector; and (c) cooling the coated two or more electrode slurries.

Abstract: The present invention provides a fabrication method of a negative electrode for a secondary battery, including: (a) heating a slurry composition for a negative electrode containing a negative electrode active material, a binder, and a solvent to a temperature lower than a boiling point (Tb) of the solvent; (b) applying the heated slurry composition for a negative electrode onto a current collector; and (c) cooling the applied slurry composition for a negative electrode.

Abstract: The present invention provides a fabrication method of a positive electrode for a secondary battery, including: (a) heating a slurry composition for a positive electrode containing a positive electrode active material, a binder, and a solvent to a temperature lower than a boiling point (17:0) of the solvent; (b) applying the heated slurry composition for a positive electrode onto current collector; and (c) cooling the applied slurry composition for a positive electrode.

Abstract: The present invention provides a fabrication method of a negative electrode for a secondary battery, including: (a) heating a slurry composition for a negative electrode containing a negative electrode active material, a binder, and a solvent to a temperature lower than a boiling point (Tb) of the solvent; (b) applying the heated slurry composition for a negative electrode onto a current collector; and (c) cooling the applied slurry composition for a negative electrode.

Abstract: The present invention relates to a secondary battery comprising a cathode, an anode and a separator interposed between the cathode and the anode, wherein the anode comprises an anode current collector and an anode mixture layer formed on at least one surface of the anode current collector, the anode mixture layer comprises an anode active material, a binder, and a conductive material, a loading amount of the anode mixture layer is 5 mg/cm2 to 15 mg/cm2and value R of the anode mixture layer is 3,000 or less, wherein R means (permeability of the anode mixture layer)×(current density of a battery)2. According to the present invention, an overvoltage phenomenon of an anode surface and the deposition of lithium metal caused thereby can be prevented so that charging can be performed with a higher current, and thus rapid charging performance is improved, and lifespan is excellent even in the same current.

Abstract: A substrate for an electrode is provided, the substrate for an electrode including a support and an electrode mixture layer including an active material on the support, and the support includes wrinkles in which peak regions and valley regions are formed in a transverse direction.

Abstract: Provided is an injection molding apparatus including: an upper mold; a lower mold; a receive block; a fixed block; a movable block; a variable cavity; a movable block adjusting unit; and an ejector pipe.

Abstract: Provided is an injection molding apparatus including: an upper mold; a lower mold; a receive block; a fixed block; a movable block; a variable cavity; a movable block adjusting unit; and an ejector pipe.