Lg Chem, Ltd

Sungkyunkwan University

Byung Hun Oh

Kwang-Seok Hong

Eun Kyung Kim

Ye Ri Kim

Su Jin Park

Hyun Woong Yun

Je Young Kim

Won Jong Kwon

Sang Uck Kim

Kwon Nam Sohn

Kil Sun Lee

Soon Ho Ahn

Sun Young Shin

In Young Kim

Hyun Wook Kim

InSung Uhm

Mi Jin Lee

Jung Koo Kang

Yongju Lee

Kwang Hyun Yoo

Seung Bo Yang

Han Sol Park

Jeyoung Kim

Seungyoun Choi

Eui Yong Hwang

Ik Su Kang

Oujung Kwon

Kyung Ho Nam

The present invention relates to a conducting material composition which is allowed to provide an electrode having a higher content of uniformly dispersed carbon nanotubes, thereby providing a lithium rechargeable batteryelectrode having more improved electrical characteristics and life characteristics, a slurry composition for forming a lithium rechargeable batteryelectrode using the same, and a lithium rechargeable battery. The conducting material composition includes carbon nanotube; and a dispersing agent including a plurality of polyaromatic hydrocarbon oxides, in which the dispersing agent contains the polyaromatic hydrocarbon oxides having a molecular weight of 300 to 1000 in an amount of 60% by weight or more.

Conducting material composition, slurry composition for forming electrode of lithium rechargeable battery and lithium rechargeable battery using the same

Disclosed herein is a cylindrical battery cell configured such that an electrode assembly, having a structure in which a positive electrode and a negative electrode are wound in the state in which a separator is interposed between the positive electrode and the negative electrode, is mounted in a cylindrical can in the state of being impregnated with an electrolytic solution, wherein an inner layer and an outer layer, each of which is made of stainless steel, are formed in at least a portion of the cylindrical can, and wherein a reinforcement layer is interposed between the inner layer and the outer layer, the reinforcement layer being made of a different metal than the inner layer and the outer layer.

Cylindrical battery cell including can made of different kinds of metals

A battery pack includes an electrode assembly having a cathode, an anode, and a separator interposed therebetween, a first pack case having the electrode assembly and an electrolyte disposed therein, a second pack case with the first pack case disposed therein and a portion of the interior surface separated from the first pack case exterior surface, a fire extinguishing agent disposed between the exterior surface of the first pack case and the interior surface of the second pack case and a cap assembly that simultaneously seals an open surface of the first and second pack cases when the first pack case is disposed in the second pack case. A first venting portion is configured to open to enable the fire extinguishing agent to flow into the interior of the first pack case when the pressure within the first pack case is equal to or greater than a critical pressure.

Battery pack comprising fire extinguishing agent

A method of outputting color code for data communication to a display screen, the method includes determining a plurality of sections having a predetermined order of a display screen, mapping the plurality of sections to different binary numbers each having at least one-bit length, and outputting a predetermined color to consecutive sections including at least a first section among the plurality of sections in a direction of the predetermined order or a reverse direction of the predetermined order. The color output to the consecutive sections represents binary numbers in which '0' or '1' is added to a front or end of designated binary numbers in the direction of the predetermined order or the reverse direction of the predetermined order, the designated binary numbers mapped to a last section among the consecutive sections in the direction of the predetermined order or the reverse direction of the predetermined order.

Method of outputting color code for data communication to display screen and method of transmitting data using color code

The present invention relates to a method for preparing carbon nanotubes which are capable of more effectively preparing carbon nanotubes having a uniform and fine size, and a dispersion composition of carbon nanotubes obtained using the same. The method for preparing carbon nanotube comprises the steps of: forming a dispersion comprising carbon nanotube bundles, a dispersant and a solvent; and enabling the dispersion to consecutively pass through a high pressure homogenizer, wherein the dispersant is a mixture of plural kinds of polyaromatic hydrocarbon oxides, and the carbon nanotube bundles are pulverized or disentangled while passing through a microchannel of the high pressure homogenizer under a shear force to form carbon nanotubes.

Method for preparing carbon nanotube, and dispersion composition of carbon nanotube

The present invention relates to a negative electrode for a secondary battery, an electrode assembly comprising same, and a secondary battery comprising the electrode assembly, the negative electrode comprising: a current collector; and a negative electrode active material layer on one or more sides of the current collector, wherein the negative electrode active material layer comprises an amphiphilic polymer and a negative electrode active material having graphite on which an amorphous carbon coating layer is formed.

Negative electrode for secondary battery, electrode assembly comprising same, and secondary battery

A method of preparing a negative electrode active material of the present invention includes mixing a lithium precursor and a titanium precursor, and sintering the precursor mixture to prepare a lithium titanium-based active material including a lithium titanium oxide, wherein a residual amount of lithium in the lithium titanium-based active material is 2,000 ppm or less based on a total amount of the lithium titanium-based active material. The preparation method allows the residual amount of lithium to be 2,000 ppm or less in a range, in which rate capability is not significantly reduced, by appropriately controlling sintering temperature, wherein the method may provide a lithium secondary battery, in which an amount of gas generated is extremely small even if stored at high temperature, a thickness expansion rate is consequently considerably low, and, simultaneously, the rate capability is also excellent.

Method of fabricating anode active material for lithium secondary battery, anode active material fabricated thereby, and slurry for anode

Provided is a positive electrode material slurry for secondary battery including a positive electrode active material, a conductive agent, a binder, and a solvent, wherein the conductive agent includes a first conductive agent and a second conductive agent having different particle shapes and sizes. Since the conductive agent of the present invention may be uniformly dispersed in the positive electrode active material by including a point-type conductive agent, as the first conductive agent, and carbon nanotubes (CNTs) subjected to a grinding process as the linear second conductive agent, conductivity of an electrode to be prepared may be improved and a secondary battery having improved high-rate discharge capacity characteristics may be provided.

Positive electrode material slurry for lithium secondary battery including at least two conductive materials and lithium secondary battery using the same

Provided is an anode active material including lithium metal oxide particles having an internal porosity ranging from 3% to 8% and an average particle diameter (D) ranging from 5 &#x3bc;m to 12 &#x3bc;m. According to the present invention, since the high-density lithium metal oxide particles are included, the adhesion to an anode may be significantly improved even by using the same or smaller amount of a binder that is required during the preparation of an anode slurry, and high rate characteristics of a secondary battery may be improved by decreasing the average particle diameter of the lithium metal oxide particles.

Anode active material having high density and preparation method thereof

Provided is an anode active material including a compound of Chemical Formula 1 below that may realize a high-density electrode and may simultaneously improve adhesion to the electrode and high rate capability, wherein the compound of Chemical Formula 1 includes first primary particles and secondary particles, and a ratio of the first primary particles to the secondary particles is in a range of 5:95 to 50:50:LiMO&#x2003;&#x2003;[Chemical Formula 1] where M is any one independently selected from the group consisting of titanium (Ti), tin (Sn), copper (Cu), lead (Pb), antimony (Sb), zinc (Zn), iron (Fe), indium (In), aluminum (Al), and zirconium (Zr) or a mixture of two or more thereof; and x, y, and z are determined according to an oxidation number of M.

Bimodal type anode active material and lithium secondary battery including the same

Provided is a method of recognizing a control command based on finger motion involving: (a) obtaining coordinate data of a pointer corresponding to a position of a finger in contact with a touch input device of a mobile terminal; (b) obtaining an input continuance time of the coordinate data, and setting values of timer variables based on the input continuance time; (c) setting logic values of a plurality of command logic variables whose logic values of True or False are based on values of the respective timer variables; and (d) recognizing an operation control command of the pointer based on the respective timer variable values and the command logic variable values.

Method of recognizing a control command based on finger motion on a touch input device

A method of generating 3D coordinates includes: acquiring a target image including a finger region with a camera of a terminal; detecting the finger region in the target image using an image processing technique; detecting a fingertip region in the finger region; and calculating 3D coordinate values using the fingertip region. Also provided is a terminal suitable for performing such a method.

Method for generating 3D coordinates and mobile terminal for generating 3D coordinates

The disclosure relates to an electrode active material including: (a) first particulate of a metal (or metalloid) oxide alloyable with lithium; and (b) second particulate of an oxide containing lithium and the same metal (or metalloid) as that of the metal (or metalloid) oxide, and to a secondary battery including the electrode active material. When the electrode active material is used as an anode active material, reduced amounts of an irreversible phase such as a lithium oxide or a lithium metal oxide are produced during initial charge-discharge of a battery since lithium is already contained in the second particulate before the initial charge-discharge, and thus a dead volume on the side of the cathode can be minimized and a high-capacity battery can be fabricated.

Electrode active material for secondary battery and method for preparing the same

Disclosed is an electrode active material comprising: (a) electrode active material particles capable of lithium intercalation/deintercalation; and (b) a multinary oxide coating layer partially or totally formed on the surface of the electrode active material particles, the multinary oxide coating layer comprising Al, P and a halogen element. A method for preparing the electrode active material, an electrode using the electrode active material, and an electrochemical device comprising the electrode, preferably a lithium secondary battery, are also disclosed. The electrode active material comprising a multinary oxide coating layer has improved structural stability and thermal safety, and thus can provide an electrochemical device having high capacity, long service life and excellent safety.

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Daejeon, South Korea

Byung Hun Oh