Samsung Sdi Co., Inc.

Jinhyon Lee

Bokhyun Ka

Kyeuyoon Sheem

Soonho Ahn

Daeseop Lim

Sangjun Lee

Junkyu Lee

Hyeri Eom

Minje Park

Yeonhee Yoon

Jongki Lee

Donghyuk Chang

Hyejin Kwon

Jiwoon Lee

Soon Ho Ahn

Hongjeong Kim

Eun-Young Goh

Sungyong Kim

Sangin Park

Hyo-Jung Song

Jeong-Ju Cho

Ilkyong Kwon

Na-Ri Seo

Hyun Nam

Jinseon Shin

Ji-hoon Son

Eunyoung Goh

Kiyoung Jeong

Eun-Hyung Choi

Jongho Jeon

Donggeun Lee

Ahram Pyun

Seongdae Kim

Provided are an electrode, a lithium battery including the same, and an electrode manufacturing method, the electrode including: an electrode active material layer including an electrode active material and a binder; and an electrode current collector on one surface or between two surfaces of the electrode active material layer, wherein the electrode active material layer includes: a first electrode active material layer including a first electrode active material and a first binder and contacting the electrode current collector; and a second electrode active material layer arranged on the first electrode active material layer and including a second electrode active material layer and a second binder.

Electrode, lithium battery including the same, and method of manufacturing the same

A negative electrode and a rechargeable lithium battery, the negative electrode including a current collector; and a negative active material layer on the current collector, the negative active material including a carbon negative active material; wherein: an electrode density of the negative electrode is in the range of about 1.0 g/cc to about 1.5 g/cc, and a DD (Degree of Divergence) value as defined by the following Equation 1 is about 24 or greater,DD (Degree of Divergence)=()*100  [Equation 1]

Negative electrode for a rechargeable lithium battery and rechargeable lithium battery including the same

The present invention relates a negative electrode for a lithium secondary battery, and a lithium secondary battery comprising same, wherein the negative electrode for a lithium secondary battery comprises a current collector, and a negative electrode active material layer including a first layer formed on the current collector and a second layer formed on the first layer, the first layer containing a first carbon-based negative electrode active material, and the second layer containing a second carbon-based negative electrode active material, wherein the degree of divergence (DD) value of the first layer is 30-90% of the DD value of the negative electrode active material layer, the DD value is defined by formula 1 below.DD (Degree of Divergence)=()*100  [Formula 1]

Negative electrode for lithium secondary battery and lithium secondary battery comprising same

The present invention relates an anode for a lithium secondary battery and a lithium secondary battery comprising same. The anode for a lithium secondary battery comprises a current collector; and an anode active material layer formed on the current collector and including a carbon-based anode active material, wherein the anode active material layer has a multi-layer structure of three or more layers and at least one layer of the anode active material layer is an oriented layer having a degree of divergence (DD) of 19 or greater, the DD being defined by the following formula 1:Degree of Divergence (DD)=()*100  [formula 1](In formula 1,

Anode for lithium secondary battery and lithium secondary battery comprising same

A negative electrode and a rechargeable lithium battery, the negative electrode including a current collector; and a negative active material layer on at least one surface of the current collector, the negative active material layer including a carbon negative active material and a conductive agent, wherein the conductive agent includes at least one of a fiber-shaped conductive agent having a average length of about 1 μm to about 200 μm and a particle-shaped conductive agent having a average long diameter of about 1 μm to about 20 μm, and a DD (Degree of Divergence) value defined by Equation 1 is about 24 or greater:DD (Degree of Divergence)=()*100  [Equation 1] wherein, in Equation 1, Ia is a sum of peak intensities at non-planar angles measured by XRD using a CuKα ray, and Itotal is a sum of peak intensity at all angles measured by XRD using a CuKα ray.

Negative electrode for rechargeable lithium battery

An electrode assembly for a rechargeable lithium battery and a rechargeable lithium battery including the same are disclosed. The electrode assembly for the rechargeable lithium battery includes: a negative electrode including a current collector; a negative active material layer; an organic-inorganic composite layer integrated with the negative active material layer, the negative active material layer including an organic layer and an inorganic layer; and a positive electrode, the negative active material layer including a first layer physically contacting the current collector, the first layer including a first carbon-based negative active material, and a second layer on the first layer, including a second carbon-based negative active material, wherein a DD value of the first layer is about 30% to about 90% of a DD value of the negative active material layer, and the DD values are defined by Equation 1.(Degree of Divergence)=()*100&#x2003;&#x2003;Equation 1

Electrode assembly for rechargeable lithium battery, and rechargeable lithium battery including same

A rechargeable battery that minimizes a current amount difference between a double-sided coated region and a single-sided coated region by increasing resistance of the single-sided coated region to be higher than that of the double-sided coated region in an electrode plate (e.g., a negative electrode plate). A rechargeable battery including: an electrode assembly including an electrode plate at opposite sides of a separator and spirally winding the separator and the electrode plates; and a pouch to accommodate the electrode assembly therein and to draw out an electrode tab connected to the electrode plates to the outside thereof. The electrode plate includes: a double-sided coated region having an active material on opposite sides of a substrate and a single-sided coated region having an active material on a single surface of the substrate, wherein resistance of the single-sided coated region is higher than that of the double-sided coated region.

Rechargeable battery

A negative electrode and a rechargeable lithium battery, the negative electrode including a current collector; and a negative active material layer on the current collector, the negative active material including a carbon negative active material; wherein: an electrode density of the negative electrode is in the range of about 1.0 g/cc to about 1.5 g/cc, and a DD (Degree of Divergence) value as defined by the following Equation 1 is about 24 or greater,(Degree of Divergence)=()*100&#x2003;&#x2003;[Equation 1]

An exemplary embodiment of the present invention provides a spiral-wound electrode assembly including: a negative electrode and a positive electrode, each of which is configured to include a substrate, and a first composite material and a second composite material formed on opposite surfaces of the substrate; and a separator disposed between the negative electrode and the anode, wherein the first composite material of the negative electrode is disposed farther away from a center of the electrode assembly than the second composite material of the negative electrode, and the first composite material of the negative electrode is oriented with respect to a first surface of the substrate of the negative electrode.

Electrode assembly and rechargeable battery including the same

A negative electrode and a rechargeable lithium battery, the negative electrode including a current collector; and a negative active material layer on the current collector, the negative active material including a carbon negative active material; wherein: an electrode density of the negative electrode is in the range of about 1.0 g/cc to about 1.5 g/cc, and a DD (Degree of Divergence) value as defined by the following Equation 1 is about 24 or greater,DD (Degree of Divergence)=()*100&#x2003;&#x2003;[Equation 1]

An electrode assembly including a separator between a positive electrode and a negative electrode. Each of the positive electrode and the negative electrode includes a base member and an active material layer at at least one side of the base member. The active material layer of the negative electrode includes an alternating arrangement of orientation portions and non-orientation portions. Each of the orientation portions is oriented to have a constant angle with respect to one side of the negative electrode.

A negative electrode and a rechargeable lithium battery, the negative electrode including a current collector; and a negative active material layer on at least one surface of the current collector, the negative active material layer including a carbon negative active material and a conductive agent, wherein the conductive agent includes at least one of a fiber-shaped conductive agent having a average length of about 1 &#x3bc;m to about 200 &#x3bc;m and a particle-shaped conductive agent having a average long diameter of about 1 &#x3bc;m to about 20 &#x3bc;m, and a DD (Degree of Divergence) value defined by Equation 1 is about 24 or greater:DD (Degree of Divergence)=()*100&#x2003;&#x2003;[Equation 1]

Negative electrode for rechargeable lithium battery, and rechargeable lithium battery including the same

Disclosed are a negative electrode for a rechargeable battery and a rechargeable battery including the same. The negative electrode for a rechargeable battery according to an exemplary embodiment of the present invention includes a substrate and an active material layer including graphite formed on at least one surface of the substrate, wherein the active material layer includes an internal layer relatively adjacent to the substrate and a surface layer relatively away from the substrate and the internal layer and the surface layer have a degree of divergence (DD) defined by Equation 1 below, and the DD value of the surface layer is 6% to 50% of the DD value of the internal layer.DD(Degree of Divergence)=()&#xd7;100&#x2003;&#x2003;[Equation 1] (Ia is a sum value of peak intensities appearing at a non-planar angle when XRD is measured using a CuK&#x3b1; line, and Itotal is a sum value of peak intensities appearing at every angle when XRD is measured using the CuK&#x3b1; line).

Negative electrode for rechargeable battery and rechargeable battery including the same

A rechargeable lithium battery includes an electrolyte, a negative electrode, and a positive electrode. The negative electrode includes a negative active material layer on a negative current collector, and includes a carbon-based negative active material. The negative electrode having a Degree of Divergence (DD) value of about 19 to about 60. The positive electrode includes a positive active material layer and a positive current collector, and includes a positive active material and a porous structured additive. The content of the porous structured additive is about 0.01 wt % to about 2 wt % based on 100 wt % of the positive active material layer.

Rechargeable lithium battery

A rechargeable battery includes an electrode assembly and first and second lead tabs. The electrode assembly includes at least one separator between a first electrode and a second electrode. The first and second lead tabs are respectively connected to the first and second electrodes and are drawn out of a case. The electrode assembly includes a first assembly having a first length in a first direction and a second assembly having a second length in the first direction shorter than the first length. The first assembly includes at least one first uncoated tab protruding from the first electrode and connected to the first lead tab, and at least one second uncoated tab protruding from the second electrode and connected to the second lead tab. The second assembly includes the at least one second uncoated tab.

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Yongin-si, South Korea

Jinhyon Lee