Samsung Electronics Co., Ltd.

Samsung Sdi Co., Inc.

Sungkyunkwan University

Junhwan Ku

Jaeman Choi

Inhyuk Son

Jonghwan Park

Jaejun Chang

Jeongkuk Shon

Sangmin Ji

Minsang Song

Seungsik Hwang

Xiangshu Li

Toshinori Sugimoto

Yeonji Chung

Hyunjae Song

Hyorang Kang

Hana Kim

Moonseok Kwon

Byungmin Lee

Myungkook Park

Jaemyung Lee

Inyong Song

Kitae Park

Jinkyu Kang

Wonseok Chang

Ryounghee Kim

Euncheol Do

Hyeokjo Gwon

Hyunchul Lee

Daeryong Jung

Minsang Kim

Saebom Ryu

Seoksoo Lee

Changduk Kang

Chilhee Chung

Jiman Kim

Jong Hyeok Park

Minsuk Lee

Youngeal Kim

Kuntae Kwon

Sunghaeng Lee

Nagjong Kim

Inyoung Song

Gwiok Park

Zhang Kan

Geewoo Jang

Youngsin Park

Provided are an all-solid secondary battery and a method of manufacturing the same, the all-solid secondary battery including: an anode layer; a cathode layer; and a solid electrolyte layer between the anode layer and the cathode layer, wherein the cathode layer contains a large-particle cathode active material, a small-diameter cathode active material, and a solid electrolyte, the solid electrolyte layer includes a first solid electrolyte layer adjacent to the cathode layer and containing a first solid electrolyte, and a second solid electrolyte layer adjacent to the anode layer and containing a second electrolyte, the second solid electrolyte has a larger size than the solid electrolyte of the cathode layer or the first solid electrolyte, and the second solid electrolyte has higher ion conductivity than the first solid electrolyte.

All-solid-state secondary battery and manufacturing method therefor

An all-solid secondary battery includes a solid electrolyte layer disposed between an anode layer and a cathode layer, where the solid electrolyte layer contains a first solid electrolyte layer including a first solid electrolyte and a second electrolyte layer including a second solid electrolyte, where the first solid electrolyte is disposed proximate to the anode layer, the second solid electrolyte layer is disposed proximate to the cathode layer, and the first solid electrolyte has a lithium ion conductivity greater than a lithium ion conductivity of the second solid electrolyte, where a difference between the lithium ion conductivity of the first solid electrolyte and the lithium ion conductivity of the second solid electrolyte is equal to or greater than about 2 mS/cm.

All-solid secondary battery and method of preparing same

An all-solid-state secondary battery includes: a cathode layer including a cathode active material, an anode layer including an anode current collector and an anode active material layer disposed on the anode current collector, the anode active material layer including an anode active material and amorphous carbon, and a solid electrolyte layer disposed between the cathode active material layer and the anode active material layer, wherein a weight ratio of the anode active material to the amorphous carbon is 1:3 to 1:1, and the anode layer has sheet resistance of about 0.5 milliohms-centimeters or less.

All-solid-state secondary battery

A composite including: at least one selected from a silicon oxide of the formula SiOand a silicon oxide of the formula SiOwherein 0<x<2; and graphene, wherein the silicon oxide is disposed in a graphene matrix.

Composite, electrochemical active material composite using the composite, electrode including the composite or electrochemical active material composite, lithium battery including the electrode, field emission device including the composite, biosensor including the composite, semiconductor device including the composite, and thermoelectric device including the composite

A composite including: at least one selected from a silicon oxide of the formula SiOand a silicon oxide of the formula SiOwherein 0&#x3c;x&#x3c;2; and graphene, wherein the silicon oxide is disposed in a graphene matrix.

An all-solid secondary battery including: an anode layer including a first anode active material layer; a cathode layer including a cathode active material layer; a solid electrolyte layer between the anode layer and the cathode layer; and an anode current collector on the anode layer and opposite the solid electrolyte layer, wherein a maximum roughness depth Rof a surface of the first anode active material layer is about 3.5 micrometers or less.

All-solid secondary battery and method for preparing all-solid secondary battery

An all-solid secondary battery includes an anode layer; a cathode layer; a solid electrolyte layer interposed between the anode layer and the cathode layer, and including a first solid electrolyte; and a first bonding layer disposed between the cathode layer and the solid electrolyte layer, and comprising a second solid electrolyte, wherein the anode layer includes an anode current collector and an anode active material layer disposed on the anode current collector, and the anode active material layer includes a binder and an anode active material, wherein the cathode layer includes a cathode current collector and a cathode active material layer disposed on the cathode current collector, and wherein the second solid electrolyte has a Young's modulus which is less than a Young's modulus of the first solid electrolyte.

All-solid secondary battery and method of manufacturing the same

Provided herein are a porous film, a separator including the same, an electrochemical device including the separator, and a method of preparing the porous film. The porous film includes first cellulose nanofibers which is impregnated with a carbonate-based solvent-containing electrolyte solution and has a reaction heat of 150 J/g or less at a temperature ranging from about 30&#xb0; C. to about 300&#xb0; C., as measured by differential scanning calorimetry (DSC).

Porous film, separator including the same, electrochemical device including separator, and method of preparing porous film

A composite including: silicon (Si); a silicon oxide of the formula SiOx, wherein 0&#x3c;x&#x3c;2; and a graphene disposed on the silicon oxide.

Composite, carbon composite including the composite, electrode, lithium battery, electroluminescent device, biosensor, semiconductor device, and thermoelectric device including the composite and/or the carbon composite

An electrode-composite separator assembly for a lithium battery, the electrode-composite separator assembly including an electrode; and a composite separator, wherein the composite separator includes a separator, and a coating film disposed on a surface of the separator, wherein the coating film includes a copolymer including an electrolyte-insoluble repeating unit and a repeating unit represented by Formula 1; and at least one selected from an inorganic particle and an organic-inorganic particle, wherein the electrode-composite separator assembly does not have an exothermic peak between 400&#xb0; C. to 480&#xb0; C. when analyzed by differential scanning calorimetry, wherein Formula 1 is wherein, in Formula 1, Ris hydrogen or a C-Calkyl group, and Ris a C-Calkyl group. Also, a lithium battery including the electrode-composite separator assembly.

Electrode-composite separator assembly for lithium battery and battery including the same

Growing community of inventors

Seongnam-si, South Korea

Junhwan Ku