Sk on Co., Ltd.

Seung Hyun Yook

Ju Ho Chung

Sang Baek Ryu

Jun Hee Han

Hwan Ho Jang

Moon Sung Kim

Hyo Mi Kim

Da Bin Chung

Da Hye Park

Kwang Ho Jeong

Sang In Bang

Seong Cho Kwon

Sang Won Park

Young Mo Yang

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.

Anode for lithium secondary battery and lithium secondary battery including the same

Provided are a negative electrode for a lithium secondary battery and a lithium secondary battery including the same, the negative electrode for a lithium secondary battery including a current collector; a first negative electrode active material layer disposed on the current collector and including a first graphite-based active material containing artificial graphite and natural graphite, and a first silicon-based active material; and a second negative electrode active material layer disposed on the first negative electrode active material layer and including a second graphite-based active material containing artificial graphite and natural graphite, and a second silicon-based active material. The first graphite-based active material has a content of the artificial graphite equal to or less than that of the natural graphite, and the second graphite-based active material has a content of the artificial graphite greater than that of the natural graphite.

Negative electrode for lithium secondary battery and lithium secondary battery including the same

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.

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.

Pouch-type secondary battery

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.

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Daejeon, South Korea

Seung Hyun Yook