Samsung Sdi Co., Inc.

Ki-Jun Kim

Kwi-Seok Choi

Chae-Woong Cho

Woon-Suk Jang

Bum-Jin Chang

Jun-Kyu Cha

Dong-Ho Son

Seung-Hun Han

Hye-Sun Jeong

Myoung-Sun Kim

Jae-Myung Kim

Beom-Kwon Kim

Young-Su Kim

Sang-hun Lee

Bok-Hyun Ka

Su-Bin Song

Sung Soo Park

Ihn Kim

Naoya Kobayashi

Jae-Hyun Shim

Maeng-Eun Lee

Toru Inagaki

Na-Ri Seo

Eun-Cheol Lee

Gil-Won Lee

Ho-Yong An

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 negative active material for a rechargeable lithium battery, a method of preparing the same, and a rechargeable lithium battery including the same. The negative active material includes a composite particle including a silicon particle and a carbon coating layer coated on the surface of the silicon particle and a porous space formed by the entangled carbon nanofibers, the composite particle contacting the external surface of the carbon nanofibers in the porous space of the carbon nanofiber structure, and the carbon nanofibers have a larger diameter than that of the composite particle and a diameter ranging from about 100 nm to about 2000 nm.

Negative active material for rechargeable lithium battery, method for preparing same, and rechargeable lithium battery including same

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

An electrode for a lithium secondary battery includes an electrode active material, a conductive agent, and a polyurethane-based compound, and has pores having an average diameter of about 2 to about 20 nm. A lithium secondary battery includes the electrode.

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

A positive electrode material for a lithium battery, a positive electrode prepared from the positive electrode material, and a lithium battery including the positive electrode are disclosed. The positive electrode material includes a positive active material, an aqueous binder, and tungsten trioxide. Due to the inclusion of the positive active material, the aqueous binder, and the tungsten trioxide (WO), the positive electrode material may substantially prevent corrosion of an aluminum substrate. The positive electrode material has high electric conductivity. Lithium batteries including positive electrodes prepared from the positive electrode material have decreased resistance of the electrode plate, high rate characteristics, and good lifespan characteristics.

Positive electrode material for lithium battery, positive electrode prepared from the positive material, and lithium battery including the positive electrode

An electrode for a lithium secondary battery, the electrode including: an electrode active material; and a composite including a clay and a polymer intercalated between layers of the clay, a method of manufacturing the electrode, and a lithium secondary battery including the electrode.

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

A cathode active material composition includes a cathode active material, a water-based binder, and a transition metal oxide. A cathode is prepared using the cathode active material composition. A lithium battery includes the cathode. The lithium battery has improved high-rate characteristics and lifespan characteristics by preventing an increase in internal resistance due to the corrosion of an electrode base material.

Cathode active material composition, cathode prepared by using the same, and lithium battery including the cathode

In one aspect, a composite binder for a battery, including an inorganic particle; a binder polymer; and an organic-inorganic coupling agent, a negative electrode including the composite binder, and a lithium battery including the negative electrode is provided.

Composite binder for battery, and anode and battery including the composite binder

A negative active material for a rechargeable lithium battery including a flake powder including a plurality of flakes, each flake including a plurality of silicon atoms and a plurality of oxygen atoms, wherein an oxygen atom amount for each flake ranges from 5 wt % to 36 wt % based on a total amount of silicon atoms and oxygen atoms, each flake having a thickness ranging from 30 nm to 500 nm and a ratio of an average longest dimension to the thickness ranging from 10 to 100.

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

A conductive agent having a nonzero surface charge, a positive electrode slurry composition of a lithium secondary battery, including the conductive agent, and a lithium secondary battery including the conductive agent.

Conductive agent, positive electrode slurry composition for lithium secondary battery including the conductive agent, and lithium secondary battery including the conductive agent

Disclosed is a positive active material for a rechargeable lithium battery and a rechargeable lithium battery including the same, and the positive active material includes a carbon material having a structure with 'n' polycyclic nano sheets, wherein 'n' is an integer of 1 to 30 with hexagonal rings having six carbon atoms condensed and substantially aligned in a plane, the polycyclic nano sheets are laminated in a vertical direction to the plane; and a lithium-containing olivine-based compound attached to the surface of the carbon material is formed with a carbon-coating layer on its surface.

Positive active material for rechargeable lithium battery and rechargeable lithium battery

An electrode composition containing a first conducting agent and a second conducting agent, an electrode for lithium secondary batteries, a method of manufacturing the electrode, and a lithium secondary battery including the electrode. The second conducting agent is an agglomerate formed of a conducting material and a fluorine-based polymer.

Electrode composition, electrode for lithium secondary battery, method of manufacturing the electrode and lithium secondary battery including the electrode

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Yongin-si, South Korea

Ki-Jun Kim