Electronics and Telecommunications Research Institute

Korea Advanced Institute of Science and Technology

Sk Innovation Co., Ltd.

Ulsan National Institute of Science and Technology

Daegu Gyeongbuk Institute of Science and Technology

Dong Ok Shin

Kwang Man Kim

Young-Gi Lee

Kunyoung Kang

Ju Young Kim

Sang-Young Lee

Eun-Hye Kil

Keunho Choi

Young Sam Park

Sang Ouk Kim

Jimin Oh

Yoon Seok Jung

Seok Hun Kang

Yong Min Lee

Kwang Jin Kim

Seoungwoo Byun

Juhye Song

Yun Sung Lee

Dohwan Kim

Amaresh S

Bum Ryong Shin

Bong Hoon Kim

Provided is a method of preparing a coating composition for a separator of a secondary battery, and particularly a method including dispersing a first monomer and a surfactant in a solvent to form micelles, adding a first initiator to the solvent and performing first polymerization reaction to form a precursor solution including an emulsion-type binder, and adding a second monomer and a second initiator to the precursor solution and performing second polymerization reaction to form an aqueous binder solution including a solution-type binder, wherein the emulsion-type binder has a core shape, the solution-type binder has a shell shape wrapping the emulsion-type binder, and the emulsion-type binder and the solution-type binder are chemically bonded.

Coating composition for separator of secondary battery and method of manufacturing the same

Provided is a lithium composite anode including a metal film, and lithium ion conductors and electron conductors dispersed on one surface of the metal film, wherein portions of the lithium ion conductors and electron conductors are impregnated into the metal film from the one surface of the metal film.

Lithium composite anode, method of fabricating the same, and lithium secondary battery including the same

Provided is a cellulose derivative composition for a secondary battery binder, a method of preparing a composition for a secondary battery electrode, including the same, and a secondary battery including the same. According to the inventive concept, the cellulose derivative composition for a secondary battery binder may include a compound represented by Formula 1 below.

Cellulose derivative composition for secondary battery binder and method of preparing composition for secondary battery electrode comprising the same

A lithium battery according to the inventive concept may comprise a cathode, an anode separated from the cathode, a first separator disposed between the cathode and the anode, the first separator having first pores, a second separator disposed on the first separator, the second separator having second pores, and an electrolyte filling a gap between the cathode and the anode. Diameters of the second pores may be smaller than those of the first pores. A standard deviation of the diameters of the second pores is smaller than that of the first pores.

Lithium battery electrode and method of manufacturing the same

Provided is a lithium battery including a first pouch film, a first anode part on the first pouch film, a second cathode part on the first anode part, a polymer insulating film on the second cathode part, the polymer insulating film including a disk which is configured to penetrate the polymer insulating film, a second anode part on the polymer insulating film, a first cathode part on the second anode part, and a second pouch film on the first cathode part. Herein, the second cathode part is electrically connected to the second anode part through the disk.

Lithium battery and method of manufacturing the same

An oxide-based solid electrolyte according to the present invention may be LiLaMOand may have a cubic phase. The oxide-based solid electrolyte may further include first and second dopants. A method of preparing an oxide-based solid electrolyte according to the concept of the present invention may include mixing a lithium compound, a lanthanum compound, a metal compound, a first dopant precursor, and a second dopant precursor to prepare an intermediate, and crystallizing the intermediate to prepare LiLaMOcrystals having a cubic phase.

Oxide-based solid electrolyte and method of preparing the same

A method of preparing an oxide-based solid electrolyte includes preparing a precursor solution which includes a lanthanide complex and a metal complex; preparing an intermediate by a hydrothermal reaction that is performed on the precursor solution; adding a lithium compound and a dopant precursor to the intermediate to prepare a mixture; and crystallizing the mixture. The mixture is crystallized by preparing a first oxide-based solid electrolyte by performing a first crystallization process on the mixture; and preparing a second oxide-based solid electrolyte by performing a second crystallization process on the first oxide-based solid electrolyte, wherein the second oxide-based solid electrolyte has a stoichiometric composition that is the same as that of the first oxide-based solid electrolyte, but that has a different crystal structure.

Method of preparing an oxide-based solid electrolyte by a hydrothermal reaction

A method of preparing a lithium battery according to an embodiment of the present invention may include preparing a mixture including lithium phosphorus sulfide and metal sulfide, preparing an electrode composite by applying a physical pressure to the mixture, wherein the electrode composite includes lithium phosphorus sulfide, lithium metal sulfide, and amorphous sulfide, preparing an electrode active layer by using the electrode composite, forming an electrode current collector on one side of the electrode active layer, and forming an electrolyte layer on another side of the electrode active layer.

Lithium battery and method of preparing the same

A solid polymeric electrolyte having a pattern, and a lithium battery including the same, includes a polymer matrix having a mesh structure and being formed of a cured photo-crosslinking agent; inorganic particles substantially uniformly distributed in the polymer matrix; and a liquid electrolyte comprised of a lithium salt and an organic solvent impregnated between the polymer matrix and the inorganic particles. The liquid electrolyte and the cured photo-crosslinking agent are present in a weight ratio ranging from 50:50 to 99:1. The liquid electrolyte containing the cured photo-crosslinking agent and the inorganic particle are present in a weight ratio ranging from 10:90 to 90:10. The solid polymeric electrolyte has properties suitable for a printing process to provide the pattern including a thickness ranging from about 10 nm to about 500 &#x3bc;m and, prior to curing the photo-crosslinking agent, a viscosity ranging from 100-10,000 poise under a shear rate condition of 1 sec.

Solid polymeric electrolytes and lithium battery including the same

Provided is a method for manufacturing a sulfide-based solid electrolyte including preparing a precursor comprising lithium sulfide, germanium sulfide, aluminum sulfide, phosphorus sulfide, and sulfur, conducting a mixing process of the precursor to prepare a mixture, and crystallizing the mixture to form a compound represented by LiAlGePS. The sulfide-based solid electrolyte may have high ionic conductivity.

Method for manufacturing sulfide-based solid electrolyte

A method for manufacturing a solid electrolyte includes dissolving first polymers and second polymers in a cosolvent including a first cosolvent and a second cosolvent to provide a preparation solution; adding a lithium solution to the preparation solution to provide a mixture solution; removing the second cosolvent from the mixture solution to prepare an electrolyte paste that exhibits thixotropy; and coating the electrolyte paste onto a substrate to form an electrolyte film, wherein the electrolyte paste in a gel state is characterized by the first polymers being aligned in parallel to one another in one direction; the second polymers randomly surrounding the first polymers and having an average molecular weight that is greater than that of the first polymers; and a lithium solution provided between the first polymers and the second polymers.

Method for manufacturing a solid electrolyte

A lithium battery binder composition in accordance with some example embodiments of the inventive concept may include a lithium ion polymer, an inorganic particle and an organic solution in which a lithium salt is dissolved. The lithium ion polymer may be a cellulosic polymer having sulfonic acid lithium salt or carboxylic acid lithium salt functional group. The lithium ion polymer may be manufactured by substituting hydroxyl group or carboxylic group of cellulosic polymer. The lithium battery binder composition may be used to at least one of an electrolyte, a cathode layer and an anode layer.

Lithium battery binder composition, method for preparing the same and lithium battery including the same

A method of fabricating a solid polymeric electrolyte having a pattern includes mixing constituents including a liquid electrolyte, a photo-crosslinking agent, and inorganic particles to form an electrolyte paste; dispersing together the constituents of the electrolyte paste; coating the electrolyte paste on a substrate; pressing the electrolyte paste with a patterned mold having a shape to copy the shape of the patterned mold onto the electrolyte paste and provide said pattern; and illuminating an ultraviolet light onto the electrolyte paste to induce a photo-crosslinking reaction and cure the photo-crosslinking agent of the electrolyte paste, wherein said solid polymeric electrolyte includes a polymer matrix having a mesh structure, the polymer matrix being formed of the cured photo-crosslinking agent; inorganic particles distributed in the polymer matrix; and a lithium salt and an organic solvent impregnated between the polymer matrix and the inorganic particles.

Method of fabricating a patterned solid polymeric electrolyte

Disclosed are block copolymer nanostructures formed on surface patterns different from nanostructure of the block copolymer and preparation methods thereof.

Block copolymer nanostructure formed on surface pattern with shape different from nanostructure of the block copolymer and method for preparation thereof

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Daejeon, South Korea

Dong Ok Shin