Hyundai Motor Company

Kia Motors Corporation

Kia Corporation

Sejong University

Ulsan National Institute of Science and Technology

Unist, Inc.

Sang Mok Park

Yoon Sung Lee

Jieun Lee

Dongjun Kim

Seung Min Oh

Seung-Min Oh

Yeolmae Yeo

Sung Ho Ban

Ji Eun Lee

Shin Kook Kong

Sang Heon Lee

Sung Hoon Lim

Ik Kyu Kim

Dong Hui Kim

Ko Eun Kim

Yeol Mae Yeo

Hong Seok Min

Young Woo Lee

Sang Jin Park

Jun Ki Rhee

Jung Young Cho

Seung Taek Myung

Woo Young Jin

Sang Shin Lee

Sang Hun Lee

Sa Heum Kim

Woo Sung Kim

Jin Hee Lee

Yoon Ji Lee

Nam Soon Choi

Sangjin Park

Sung You Hong

Sang Kyu Kwak

Hyeon Gyu Moon

Dong Jun Kim

Se Young Lee

Seo Young Jeong

KiSeok Koh

Min Young Shin

Dae Yeon Hwang

Ki Seok Koh

Hee Jae Kim

SungHoon Lim

Ikkyu Kim

Ji Won Nam

Shinkook Kong

Nam Hyeong Kim

Dong Hul Kim

Ji Ung Choi

A system for manufacturing a lithium ion secondary battery includes an unwinder supplying a current collector to be coated to a predetermined position, a coating device coating a coating liquid on the current collector, a drying device drying the coated current collector, and a rewinder winding the coated current collector passing through the drying device at a predetermined position.

System and method of manufacturing lithium ion secondary battery

Disclosed are a lithium secondary battery including: a positive electrode; a negative electrode; an electrolyte; and a separator including a separator substrate and a ceramic layer formed on one surface or both surfaces of the separator substrate. Particularly, the ceramic layer may include a first ceramic particle including an epoxide group and a second ceramic particle including an amine group, and the first ceramic particle may be chemically bonded to the second ceramic particle.

Lithium secondary battery including separator with ceramic layer having first ceramic particle bonded to second ceramic particle and manufacturing method the same

Disclosed is a positive electrode material for a lithium secondary battery. The positive electrode material includes a positive electrode active material formed of Li—[Mn—Ti]-M-O-based material including a transition metal (M) to enable reversible intercalation and deintercalation of lithium and molybdenum oxide. The positive electrode active material is coated with the molybdenum oxide to form a coating layer on a surface thereof.

Positive electrode material for lithium secondary battery and lithium secondary battery including same

The electrolyte for a lithium secondary battery comprises: a lithium salt; a solvent; and a functional additive, wherein the functional additive comprises naphthalen-1-yl sulfurofluoridate, represented by the following formula 1:

Electrolyte for lithium secondary battery and lithium secondary battery comprising same

Disclosed are a cathode material for a lithium secondary battery and a method of manufacturing the same. For instance, the lithium secondary battery may have a high energy density by using only a single cathode material. Particularly, the cathode material for a lithium secondary battery includes a Li&#x2014;[Mn&#x2014;Ti]&#x2014;Al&#x2014;O-based cathode active material; and a carbon nanotube (CNT) attached to the surface of the cathode active material in an acid-treated state to be formed as a composite.

Cathode material for lithium secondary battery and method of manufacturing the same

A method of mixing a cathode active material in a process of manufacturing a cathode of a lithium secondary battery is provided. The method includes a preparation step of preparing a lithium compound removal solution in which PAA (polyacrylic acid) is mixed with a solvent, a removal step of reacting the lithium compound removal solution with the cathode active material, on a surface of which a lithium compound is present, thus removing the lithium compound present on the surface of the cathode active material, and a mixing step of mixing the cathode active material, which is mixed with the lithium compound removal solution, with a conductive material and a binder.

Method of mixing cathode active material

Provided are a cathode active material for a lithium secondary battery, a cathode and a lithium secondary battery each including the same, and a method of manufacturing the same. The cathode active material for a lithium secondary battery includes a core including a lithium metal oxide and a coating layer formed on a surface and the inner grain boundaries of the core, wherein the coating layer includes a metal sulfide.

Cathode active material for lithium secondary battery, cathode and lithium secondary battery comprising same, and manufacturing method thereof

A lithium ion secondary battery includes: an anode including an anode current collector and an anode coating layer coating a region of the anode current collector; a cathode including a cathode current collector, a cathode coating layer coating a region of the cathode current collector, and an inactive coating layer disposed on a surface of a region of the cathode current collector on which the cathode coating layer is not disposed, the inactive coating layer extending from one or more of both end portions of the cathode coating layer toward an end portion of the anode; and a separation membrane arranged between the cathode and the anode.

Lithium ion secondary battery and manufacturing method of the same

Disclosed is lithium secondary battery that may include: a positive electrode; a negative electrode; an electrolyte; and a separator positioned between the positive electrode and the negative electrode. The separator may include: a separator substrate; and a fibrous adhesive layer formed on one or both surfaces of the separator substrate.

Lithium secondary battery

A cathode active material for a lithium secondary battery, the cathode method including a core including a lithium metal oxide and a coating layer disposed on the surface and the inner grain boundaries of the core, wherein the coating layer includes a metal carbide, and a method of manufacturing the same.

A secondary battery includes a first electrode assembly including a first cathode and a first anode, a second electrode assembly that is disposed to be opposite the first electrode assembly and that includes a second cathode and a second anode, a cooling plate disposed between the first and second electrode assemblies for cooling of the first and second electrode assemblies, an exterior material in which the first and second electrode assemblies are disposed, a cathode tab electrically connected to the first and second cathodes and exposed outside the exterior material, and an anode tab electrically connected to the first and second anodes and exposed outside the exterior material, in which at least one of the cathode tab and the anode tab is coupled to the cooling plate.

Secondary battery

A method for checking defects in a lithium ion secondary battery includes primarily charging and degassing the lithium ion secondary battery after manufacture of the secondary battery, secondarily charging and discharging the secondary battery and then measuring one or more of OCVs and IRs of lithium ion secondary battery cells; pressurizing and aging the secondary battery by aging the secondary battery in a state in which a pressure of a designated magnitude or more is applied to the secondary battery, and checking whether or not the secondary battery cells are defective by re-measuring the one or more of OCVs and IRs of the secondary battery cells and then comparing the re-measured one or more of the OCVs and the IRs to the previously measured one or more of the OCVs and the IRs.

Method for checking defects in lithium ion secondary battery and lithium ion secondary battery manufactured thereby

Disclosed is a lithium secondary battery having an improved lifetime. The lithium secondary battery may include: a cathode including a cathode active material; an anode including an anode active material; a separator disposed between the cathode and the anode; and an electrolyte including bis(trimethylsilyl) 2,2-thiodiacetate.

An all-solid-state battery includes: a cathode substrate; a cathode portion; a solid electrolyte layer; an anode portion; and an anode substrate. The cathode portion includes a cathode active material, a first solid electrolyte, a conductive material, and a binder, the anode portion is configured by a first anode portion having a pore structure and a second anode portion having metal foil, and the first anode portion includes a second solid electrolyte, a conductive material, and a binder.

All solid state battery and manufacturing method thereof

Growing community of inventors

Gwangju-si, South Korea

Sang Mok Park