Samsung Sdi Co., Inc.

Dong-Ho Son

Ki-Jun Kim

Beom-Kwon Kim

Kijun Kim

Chae-Woong Cho

Jun-Kyu Cha

Bok-Hyun Ka

Woon-Suk Jang

Ihn Kim

Ki-jun Kim

Hyo-Jung Song

Myoung-Sun Kim

Gil-Won Lee

Suyoun Yoon

Ho-Yong An

Disclosed are a negative active material for a rechargeable lithium battery and a rechargeable lithium battery including the same. The negative active material has an N/P ratio, which is a ratio of a maximum capacity per a unit area of a negative active material relative to maximum capacity per a unit area of a positive active material, ranging from about 1.5 to about 2. The negative active material includes a composite particle of silicon (Si) and carbon and crystalline carbon. A content of the Si is about 3 wt % to about 15 wt % based on a total weight of the negative active material.

Negative active material for rechargeable lithium battery and rechargeable lithium battery including same

Disclosed are a negative active material for a rechargeable lithium battery including a silicon-based material and graphite, wherein an average particle diameter (D50) of the graphite may range from about 5 &#x3bc;m to about 15 &#x3bc;m, and a Raman peak intensity ratio (I/I) of the graphite may range from about 0.1 to about 0.9, and a negative electrode and a rechargeable lithium battery including the same.

Negative electrode active material for rechargeable lithium battery, negative electrode including same, and rechargeable lithium battery including negative electrode

A rechargeable battery that may be manufactured and used in various shapes is disclosed. An embodiment of the rechargeable battery includes: an electrode assembly including a pair of electrodes on respective surfaces of a separator and a pair of lead tabs extending from the pair of electrodes; and a pouch receiving the electrode assembly and having the lead tabs protruding out to one side, each of the electrodes including a first bending part including a molded plate including active material particles and a metal fiber yarn of a current collector, and the pouch including a second bending part superimposed on the electrodes in parallel and including a molded sheet having a shape corresponding to that of the first bending part.

Rechargeable battery and manufacturing method of the same

A binder composition for a secondary battery, and an anode and a lithium battery that include the binder composition are disclosed. The binder composition may include: first nanoparticles having a glass transition temperature of about 60&#xb0; C. or greater and an average particle diameter of about 100 nm or less; and a first polymer binder having a glass transition temperature of about 20&#xb0; C. or less.

Binder composition for secondary battery, anode including the binder composition, and lithium battery including the anode

Disclosed are a binder composition for a rechargeable lithium battery including a cross-linked compound of polyacrylic acid substituted with an alkali cation and polyvinyl alcohol and an electrode and rechargeable lithium battery including the same. The cross-linked compound of polyacrylic acid and polyvinyl alcohol is obtained by heating polyacrylic acid and polyvinyl alcohol to effect a cross-linking reaction via esterification. The cross-linked compound of polyvinyl alcohol and polyacrylic acid substituted with an alkali cation may improve phase stability of a binder, and has high cross-linking ratio, thereby providing for excellent performance of a rechargeable lithium battery.

Binder composition for rechargeable lithium battery, and electrode and rechargeable lithium battery including the same

Growing community of inventors

Yongin-si, South Korea

Dong-Ho Son