Lg Chem, Ltd

Toray Industries, Inc.

Korea Atomic Energy Research Institute

Korea Hydro Nuclear Power Co., Ltd.

Toray Battery Separator Film Co., Ltd.

Toray Battery Seperator Film Co., Ltd.

Other

Samsung Electronics Co., Ltd.

Korea Advanced Institute of Science and Technology

Lg Energy Solution, Ltd.

Daewoo Electronics Co., Ltd.

Korea Electric Power Corporation

Lg Electronics Inc.

Jong-Hun Kim

Eui-Jun Park

Je-Young Kim

Yo-Han Kwon

Eui-jun Park

Hae-joo Jeong

Joo-Sung Lee

Jang-Hyuk Hong

Joon-Soo Kim

Yong-Sik Kwon

Kum-Ran Ji

Bo-Kyung Ryu

Keon-Sik Kim

Su-Jin Yoon

Jin-Woo Kim

Jeong-Min Ha

Dong-Joo Kim

Sang-Young Lee

Jae-Ho Yang

Byoung-Jin Shin

Sun-Mi Jin

In-Chul Kim

Da-Kyung Han

Kun-Woo Song

Jung-Hoon Yang

Young Woo Rhee

Seok-Koo Kim

Dae-Ho Kim

Yong-sik Kwon

Joon-soo Kim

Jin-Hee Jeong

Jung-Pil Yu

Hae-Joo Jeong

Yong-Deok Chang

Pil-Kyu Park

Yang-Hyun Koo

Young-Suk Cho

JangSoo Oh

Hye-Ran Jung

Dong-Wook Sung

Hyung-Kyun Yu

Eun-duck Park

Kyung-Ryun Ka

Boo-Gon Woo

Byeong-Gyu Cho

Ki-Won Kang

Mi-Jeung Hong

Young-Woo Rhee

Joo Sung Lee

Jin-Nyoung Yoo

Jong-Pil Park

Soon-Ho Ahn

Ho-Cheol Lee

Young-Ho Lee

Jae-Jin Kim

So-Mi Jeong

No-Ma Kim

Hyo-Hoon Park

Ji-Eun Lee

Kyung-Ho Yoon

Hyung-Kyu Kim

Hyun-Min Jang

Youn-Ho Jung

Kang-Hee Lee

Min-Ho Park

Seong-Dae Kim

Jae-Yong Kim

Kee-Young Kim

Joon-Yong Sohn

Mijeung Hong

Dong-Il Song

Dong Seok Kim

In-Gyoung Yu

Hyun-Wook Kim

Seo-Young Lee

Choon-Sik Jung

Hee-Beom Kang

Sung-Min Hwang

Jae-Young Seol

Sang-Ig Rho

Min-Jae Lee

Sung-Jun Do

Jae-Jo Yang

Jeong-Gyu Park

Hyun-Gyu Han

Chill-Sun Ryu

Young-Deok Chang

Sung-Kyou Park

Boo-Gon 8-401 Lg Company Housing Apt Woo

Gyu-Sang Jung

In-Ki Lee

In-Tae Park

A separator sealing apparatus for bonding an upper separator and a lower separator with an electrode plate being interposed therebetween and a separator sealing method is provided. The separator sealing apparatus includes a first sealing unit configured to seal a first region specified as an outer edge along a width direction of the electrode plate, among portions where the upper separator and the lower separator face each other; and a second sealing unit configured to seal a second region specified as an outer edge along a length direction of the electrode plate, among the portions where the upper separator and the lower separator face each other.

Separator sealing apparatus and method for preventing bending of separator of secondary battery

Disclosed are a nuclear fuel pellet having enhanced thermal conductivity and a method of manufacturing the same, the method including (a) a step of manufacturing a mixture including a nuclear fuel oxide powder and a thermally conductive plate-shaped metal powder; and (b) a step of molding and then heat-treating the thermally conductive plate-shaped metal powder to have an orientation in a horizontal direction in the mixture, thereby forming a pellet.

Nuclear fuel pellet having enhanced thermal conductivity and method of manufacturing the same

The present disclosure relates to an invention directed to a composite separator having a porous coating layer, where the porous coating layer is prepared from a slurry by adjusting a particle diameter of an inorganic matter that is an ingredient of the slurry, so that a sinking rate of the inorganic particles may remarkably slow down and dispersibility may be dramatically improved, and as a result, the content of the inorganic particles may relatively increase and the inorganic particles may be uniformly distributed in the coating layer on a substrate, thereby preventing a reduction in battery performance.

Composite separator including porous coating layer made from slurry having improved dispersibility

Disclosed is a negative electrode active material including artificial graphite having a large particle diameter and natural graphite having a small particle diameter, wherein the average particle diameter ratio of the small particle and the large particle is 1:1.5-1:5. A secondary battery including the negative electrode active material is also disclosed.

Negative electrode active material and secondary battery comprising same

A separator includes a porous substrate having a plurality of pores; and a porous coating layer formed on at least one surface of the porous substrate and made of a mixture of a binder and a plurality of inorganic particles, wherein the binder includes a crosslinked binder. This separator may improve high temperature cycle performance, discharge characteristics and thermal resistance of an electrochemical device since the separator exhibits improved insolubility and impregnation to electrolyte and improved thermal resistance.

Separator having porous coating layer, method for manufacturing the same and electrochemical device having the same

Disclosed is a method for manufacturing a separator for an electrochemical device. The method contributes to formation of a separator with good bondability to electrodes and prevents inorganic particles from detaching during an assembling process of an electrochemical device.

Method for manufacturing separator, separator manufactured therefrom and method for manufacturing electrochemical device having the same

The present invention relates to a separator for a secondary battery which is capable of improving a shut-down function of a cellulose-based multilayer separator physically having high strength. The separator for a secondary battery comprises a substrate formed of cellulose-based nanofibers and polyethylene nanoparticles; and a resin layer stacked on one surface or both surfaces of the substrate, the resin being formed from a polyolefin.

Cellulose-based multilayer separator

The present invention provides a method of preparing a separator for a lithium secondary battery, comprising: forming a porous coating layer on at least one surface of a porous substrate, the porous coating layer comprising inorganic particles; bringing polymer particles into electric charging to obtain electrically charged polymer particles; transferring the electrically charged polymer particles on the top surface the porous coating layer to form a functional coating layer; and fixing the functional coating layer with heat and pressure, a separator prepared by the method, and a lithium secondary battery comprising the separator.

Method of preparing separator for lithium secondary battery, separator prepared therefrom, and lithium secondary battery comprising the same

The present invention provides a method for manufacturing a separator, comprising the steps of (S1) preparing a porous planar substrate having multiple pores; (S2) coating a coating solution obtained by dissolving a binder polymer in a solvent and dispersing inorganic particles therein on the porous substrate to form a porous coating layer and drying the porous coating layer; and (S3) applying a binder solution on the surface of the dried porous coating layer to form an adhesive layer, wherein the binder solution has a surface energy of at least 10 mN/m higher than that of the porous coating layer and a contact angle of the binder solution to the surface of the porous coating layer maintained at 80&#xb0; or more for 30 seconds. In accordance with the present invention, a separator capable of obtaining sufficient adhesion force with minimizing the amount of an adhesive used for the adhesion with an electrode, and minimizing the deterioration of battery performances can be easily manufactured.

Method for manufacturing separator, separator manufactured therefrom, and electrochemical device comprising the same

A pouch type secondary battery includes an electrode assembly and a pouch sheath material including a first pouch portion and a second pouch portion. The pouch-type secondary battery includes dual electrode leads wherein a first electrode lead is attached to the first pouch portion and a second electrode lead is attached to the second pouch portion. In the pouch-type secondary battery, electric current is interrupted by using a volumetric swelling phenomenon caused by swelling or pressure generated upon overcharge so that the battery may be prevented from being further charged. In addition, when pressure is increased by an additional reaction, venting occurs toward the inner lead portion of each of the dual electrode leads. As a result, it is possible to increase the stability of a battery cell, module and a pack received in the pouch, and thus to improve the life of a battery.

Secondary battery having improved safety

A waveguide having a bi-directional optical transmission structure comprises: a main waveguide which is formed in a preset direction; a branch waveguide which is connected to at least one of both ends of the main waveguide; and a reflector which is placed at an intersection where the branch waveguide and the at least one of both ends of the main waveguide are connected, and which has a different refraction index from the refraction index of the main waveguide and the refraction index of the branch waveguide, wherein the reflector refracts or reflects in different forms the bidirectional light signals for transmission and reception, and thereby directs the light signal for transmission to the main waveguide, and separates the light signal for reception to the branch waveguide.

Waveguide having bi-directional optical transmission structure

The present disclosure relates to a separator for an electrochemical device with pores having predetermined diameter, permeation time, and tortuosity, to allow for smooth movement of lithium ions and a method for manufacturing the same, and smooth movement of lithium ions may be optimized by the separator for an electrochemical device.

Separator for electrochemical device and method for manufacturing the same

The present disclosure relates to a non-woven fabric made from a fiber coated with a binder polymer by spinning a non-woven forming fiber in an organic binder polymer compound solution, an electrochemical cell using the non-woven fabric as a separator substrate, and a method of making the non-woven fabric, and the non-woven fabric has a pore diameter in a range of 0.001 to 10 &#x3bc;m, thereby providing a mechanical property required for a separator while ensuring a favorable movement of a lithium ion, and in the use of the non-woven fabric as a separator of an electrochemical cell, eliminating a need for a process of applying a separate adhesive layer, resulting in an effect of simplifying a separator manufacturing process.

Non-woven fabric made from fiber coated with organic binder polymer compound, electrochemical cell comprising the non-woven fabric, and method for making the non-woven fabric

Disclosed is a method of manufacturing a porous separator including an elastic material, and a separator manufactured by the method. The separator includes an elastic material being uniformly dispersed in a polymer at a weight ratio of 40:60 to 5:95, and a value of elongation at break in a low tensile strength direction at room temperature is greater than or equal to 250%. In addition, the method of manufacturing a porous separator includes forming an extruded sheet by extruding a mixture of a polymer and an elastic material at a weight ratio of 95:5 to 60:40, forming a film by annealing and stretching the extruded sheet, and forming a porous separator by heat setting the stretched film. Accordingly, a thermal shrinkage ratio of the film is reduced and an elongation at break is greatly increased, to provide a porous separator with improved stability.

Method of manufacturing porous separator comprising elastic material, porous separator manufactured by the method, and secondary battery comprising the separator

The present disclosure provides a porous separator substrate with an inverse opal structure obtained by using an engineering plastic resin with high heat-resistance, and a manufacturing method thereof. In the method, a non-crosslinked polymer resin is used to form an opal structure and a crosslinked polymer resin is penetrated into the opal structure and an organic solvent is used to remove the polymer particles being used to form the opal structure, thereby manufacturing a porous substrate with an inverse opal structure. According to the present disclosure, a separator having good porosity and air permeability can be provided without the problems of heat-resistance decrease, pore closing and thickness decrease.

Porous separator having inverse opal structure for secondary battery and method for manufacturing the same

Growing community of inventors

Daejeon, South Korea

Jong-Hun Kim