The present invention relates to a negative electrode for a lithium secondary battery and a lithium secondary battery comprising the same. The negative electrode for a lithium secondary battery comprises a current collector and a negative electrode active material layer formed on the current collector, wherein the negative electrode active material layer includes a first negative electrode active material and a first binder, and a second active material layer formed on the first active material layer and including a second negative electrode active material and a second binder, a content of the first binder is greater than that of the second binder, a loading level of the negative electrode active material layer is 10 mg/cm.sup.2 to 30 mg/cm.sup.2, a loading level of the first active material layer is 4 mg/cm.sup.2 to 25 mg/cm.sup.2, a loading level of the second active material layer is 4 mg/cm.sup.2 to 25 mg/cm.sup.2, and a loading level of the second active material layer is equal to or higher than that of the first active material layer.

An electrochemical apparatus includes a positive electrode. The positive electrode includes a current collector, a first material layer, and a second material layer. The second material layer is disposed on at least one surface of the current collector, and the first material layer is disposed between the current collector and the second material layer. The first material layer includes a leveling agent. A difference between the maximum value and the minimum value of thickness of the first material layer is less than or equal to 3 μm. The obtained positive electrode has high uniformity in thickness, and there is strong adhesion between the current collector and the first material layer, and between the second material layer and the first material layer.

An electrode plate includes a current collector and an active material layer provided on the current collector. The active material layer includes a first composite particle including a first active material particle and a first binder particle and a second composite particle including a second active material particle and a second binder particle. In a thickness direction of the active material layer, the first composite particle is closer to the current collector than the second composite particle. A quantity of the first active material particle contained in the first composite particle is greater than a quantity of the second active material particle contained in the second composite particle. Components of both the first binder particle and the second binder particle include polypropylene.

An electrode for all-solid-state secondary batteries which enables the achievement of a practicable all-solid-state secondary battery even if an electrode active material layer does not contain a solid electrolyte which has been an essential ingredient for conventional electrodes for all-solid-state secondary batteries; and a practicable all-solid-state secondary battery which uses an electrode in which an electrode active material layer does not contain a solid electrolyte. The all-solid-state secondary battery includes a positive electrode, a solid electrolyte layer and a negative electrode, the positive electrode and/or the negative electrode has an electrode active material layer on a collector, the electrode active material layer contains an electrode active material and a binder resin; the binder resin contains a polyimide resin; and the electrode active material layer does not contain a solid electrolyte, while containing a lithium salt that has a solubility of 0.1 g or more per 100 g of a solvent at 25° C. with respect to water or at least one organic solvent.

A composite negative electrode based on pure metallic lithium, pure metallic sodium or one of their alloys and a polymer membrane, a method for manufacturing such an electrode, as well as an electrical energy storage system, in particular an electrochemical accumulator such as a secondary (rechargeable) lithium or sodium battery comprising at least one such negative electrode. It is particularly applicable to Lithium-Metal-Polymer or LMP™ batteries.

Disclosed are a positive electrode binder for a lithium secondary battery capable of improving battery performance, by being constituted by a cationic monomer, and thus capturing lithium polysulfide that occurs during charging and discharging of the battery, and a positive electrode for a lithium secondary battery and a lithium secondary battery comprising the same. The positive electrode binder for the lithium secondary battery comprises a cationic (meth)acrylate-based monomer containing one or more cations, or a derivative thereof.

Provided is a non-aqueous electrolyte secondary battery capable of achieving both load characteristics and cycle characteristics. The non-aqueous electrolyte secondary battery includes a positive electrode, a negative electrode, and a non-aqueous electrolytic solution. The negative electrode includes a negative electrode active material layer including acrylonitrile-styrene-butadiene rubber. The non-aqueous electrolytic solution includes a propionic acid ester, a halogenated cyclic carbonic acid ester, and at least one of predetermined cyclic sulfuric acid anhydrides. A content of the acrylonitrile-styrene-butadiene rubber in the negative electrode active material layer is 0.5 mass% or more and 2.0 mass% or less.

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.

An electrode for an all-solid-state battery includes a current collector, a carbon material layer having an adhesive property, and an active material layer in this order in the thickness direction, and the carbon material layer contains a carbon material, a dispersion material, and a binder.

Disclosed is a method of fabricating an anode for a lithium-ion battery, including milling a mixture of nano-silicon, one or more carbonaceous materials and one or more solvents, wherein the mixture is retained as a wet slurry during milling. The mixture is carbonised to produce a silicon thinly coated with carbon (Si@C) material. Further milling occurs of a second mixture of the Si@C material, one or more graphite, one or more second carbonaceous materials and one or more second solvents, wherein the second mixture is retained as a second wet slurry during milling. The second mixture is carbonised to produce a Si@C/graphite/carbon material. The anode is formed from the Si@C/graphite/carbon material.