Abstract: An anode for a lithium secondary battery includes an anode current collector, and an anode active material layer formed on at least one surface of the anode current collector. The anode active material layer includes a carbon-based active material, a first silicon-based active material including a carbon-silicon composite active material, and a second silicon-based active material including a silicon oxide (SiOx, 0<x<2). A content of the first silicon-based active material is in a range from 2 wt % to 40 wt % based on a total weight of the anode active material layer.

Abstract: A lithium secondary battery is disclosed. In some implementations, the lithium secondary battery includes a positive electrode including a positive electrode active material including lithium metal oxide including nickel (Ni) and a negative electrode including a negative electrode active material including a silicon-based active material, wherein the positive electrode active material includes 10 wt % or more of lithium metal oxide in the form of single particles based on a total weight of the positive electrode active material, and the negative electrode active material includes 1 to 15 wt % of the silicon-based active material based on a total weight of the negative electrode active material.

Abstract: An anode for a secondary battery includes an anode current collector, a first anode mixture layer on at least one surface of the anode current collector, and a second anode mixture layer on the first anode mixture layer. The first anode mixture layer includes a first silicon-based active material having a carbon coating layer formed on a surface, and a first conductive material, the second anode mixture layer includes a second silicon-based active material doped with a metal, and a second conductive material, and the anode for a secondary battery exhibits a Radial Breathing Mode (RBM) peak in a Raman spectrum obtained from a surface of the second anode mixture layer. An influence of volume expansion/contraction of a silicon-based active material during battery charging/discharging may be alleviated.

Abstract: An anode for a secondary battery is disclosed. In some implementations, the anode includes an anode current collector, a first anode mixture layer on at least one surface of the anode current collector, and a second anode mixture layer on the first anode mixture layer. The first anode mixture layer includes a first silicon-based active material including a carbon coating layer formed on a surface thereof, and a first conductive material. The second anode mixture layer includes a second silicon-based active material doped with a metal, and a second conductive material. The first conductive material has a Raman R value, greater than or equal to a Raman R value of the second conductive material. According to some implementations, volume expansion/contraction of a silicon-based active material may be alleviated during battery charging/discharging.

Abstract: An anode for a lithium secondary battery includes a material layer configured to serve as a current collector, a first anode mixture layer formed on at least one surface of the material layer, and a second anode mixture layer formed on the first anode mixture layer. The first anode mixture layer includes a first silicon-based active material, the second anode mixture layer includes a second silicon-based active material, and a particle volume fraction ratio (RPV) for each layer according to Equation 1 expressed as RPV=VD1/VD2 is greater than 1. In Equation 1, VD1 is a volume fraction (%) of particles having a particle diameter of 2.5 ?m or less in the first silicon-based active material, and VD2 is a volume fraction (%) of particles having a particle diameter of 2.5 ?m or less in the second silicon-based active material.

Abstract: The disclosed technology relates to an anode for a lithium secondary battery and a lithium secondary battery including the same, the anode for a secondary battery including: an anode current collector; a first anode mixture layer including a first silicon-based anode active material on at least one surface of the anode current collector; and a second anode mixture layer including a second silicon-based anode active material on the first anode mixture layer, wherein the first silicon-based anode active material is SiOx(0?x<2) doped with a metal element.

Abstract: Negative electrodes for lithium secondary batteries and lithium secondary batteries including the negative electrodes are disclosed. In some implementations, a negative electrode for a secondary battery includes a negative electrode current collector, a first negative electrode mixture layer including a first silicon-based negative electrode active material and disposed on at least one surface of the negative electrode current collector, and a second negative electrode mixture layer including a second silicon-based negative electrode active material and disposed on the first negative electrode mixture layer, wherein the second silicon-based negative electrode active material is SiOx (0?x<2) doped with a metal element.

Abstract: An anode active material for a secondary battery according to an embodiment of the disclosed technology includes an anode current collector, a first anode active material layer on at least one surface of the anode current collector and including a graphite-based active material and a silicon-based active material doped with a metal element, and a second anode active material layer on the first anode active material layer and including a porous structure. The porous structure includes a carbon-based particle having pores and a silicon-containing coating formed inside the pores or on a surface of the carbon-based particle.

Abstract: An anode for a lithium secondary battery includes an anode current collector, and a first anode active material layer and a second anode active material layer sequentially stacked on at least one surface of the anode current collector. The first anode active material layer and the second anode active material layer includes a first silicon-based active material and a second silicon-based active material, respectively.

Abstract: A pouch-type secondary battery includes: an electrode assembly including a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode; and a pouch case including a sealing portion sealed along an edge thereof to accommodate the electrode assembly therein, and a terrace portion formed to extend toward the sealing portion in which an electrode lead is disposed, wherein a notch portion at which a body of a perforator is seated is formed in the sealing portion to form a perforation portion on the terrace portion.

Abstract: An anode active material for a secondary battery includes a carbon-based active material, and silicon-based active material particles doped with magnesium. At least some of the silicon-based active material particles include pores, and a volume ratio of pores having a diameter of 50 nm or less among the pores is 2% or less based on a total volume of the silicon-based active material particles.

Abstract: The technology and implementations disclosed in this patent document generally relate to a lithium secondary battery including: a first unit cell including a first anode including a 1-1 anode mixture layer and a 1-2 anode mixture layer on the 1-1 anode mixture layer, and a second unit cell including a second anode including a 2-1 anode mixture layer and a 2-2 anode mixture layer on the 2-1 anode mixture layer, wherein a weight ratio of the silicon-based active material in the 1-2 anode mixture layer is greater than a weight ratio of the silicon-based active material in the 1-1 anode mixture layer, and a weight ratio of the silicon-based active material in the 2-2 anode mixture layer is less than or equal to a weight ratio of the silicon-based active material in the 2-1 anode mixture layer.

Abstract: In some implementations, the anode includes a current collector, a first anode mixture layer formed on at least one surface of the current collector, and a second anode mixture layer formed on the first anode mixture layer. The first anode mixture layer and the second anode mixture layer include a carbon-based active material, respectively. The first anode mixture layer includes a first binder, a first silicon-based active material, and a first conductive material. The second anode mixture layer includes a second binder, a second silicon-based active material, and a second conductive material. Contents of the first conductive material and the second conductive material are different from each other with respect to the total combined weight of the first anode mixture layer and the second anode mixture layer. Types of the first silicon-based active material and the second silicon-based active material are different from each other.

Abstract: An anode for a lithium secondary battery includes an anode current collector, and an anode active material layer formed on at least one surface of the anode current collector. The anode active material layer includes a carbon-based active material, a first silicon-based active material doped with magnesium and a second silicon-based active material not doped with magnesium. A content of the first silicon-based active material is in a range from 2 wt % to 20 wt % based on a total weight of the anode active material layer.

Abstract: An anode for a secondary battery is disclosed. In some implementations, the anode includes a current collector, a first anode mixture layer formed on at least one surface of the current collector, and a second anode mixture layer formed on the first anode mixture layer. The first anode mixture layer and the second anode mixture layer include a silicon-based active material, respectively. The first anode mixture layer includes a first carbon-based active material. The second anode mixture layer includes a second carbon-based active material. The first carbon-based active material has an OI value greater than or equal to an OI value of the second carbon-based active material.

Abstract: An anode for a lithium secondary battery includes an anode current collector, and an anode active material layer formed on at least one surface of the anode current collector. The anode active material layer includes a carbon-based active material, a first silicon-based active material doped with magnesium and a second silicon-based active material not doped with magnesium. A content of the first silicon-based active material is in a range from 2 wt % to 20 wt % based on a total weight of the anode active material layer.

Abstract: An anode for a lithium secondary battery according to exemplary embodiments of the present disclosure includes: an anode current collector; an adhesive layer formed on the anode current collector and includes a first binder; and an anode active material layer formed on the adhesive layer and includes an anode active material including silicon-carbon composite particles and a second binder.

Abstract: An anode for a lithium secondary battery includes an anode current collector, and an anode active material layer formed on at least one surface of the anode current collector. The anode active material layer includes a carbon-based active material, a first silicon-based active material doped with magnesium and a second silicon-based active material not doped with magnesium. A content of the first silicon-based active material is in a range from 2 wt % to 20 wt % based on a total weight of the anode active material layer.

Abstract: An anode for a lithium secondary battery includes an anode current collector, and a first anode active material layer and a second anode active material layer sequentially stacked on a surface of the anode current collector. Each of the first anode active material layer and the second anode active material layer includes an anode active material and a binder. A content of a free binder unbonded with the anode active material in the first anode active material layer based on a weight of the binder included in the first anode active material layer is greater than a content of a free binder unbonded with the anode active material in the second anode active material layer based on a weight of the binder included in the second anode active material layer.

Abstract: In some implementations, the anode includes a current collector, a first anode mixture layer formed on at least one surface of the current collector, and a second anode mixture layer formed on the first anode mixture layer. The first anode mixture layer and the second anode mixture layer include a carbon-based active material, respectively. The first anode mixture layer includes a first binder, a first silicon-based active material, and a first conductive material. The second anode mixture layer includes a second binder, a second silicon-based active material, and a second conductive material. Contents of the first conductive material and the second conductive material are different from each other with respect to the total combined weight of the first anode mixture layer and the second anode mixture layer. Types of the first silicon-based active material and the second silicon-based active material are different from each other.