Samsung Electronics Co., Ltd.

Samsung Sdi Co., Inc.

Yeonji Chung

Jaeman Choi

Myongchun Koh

Insun Park

Jonghwan Park

Seungsik Hwang

Dongyoung Kim

Junhwan Ku

Inhyuk Son

Jinah Seo

Jaejun Chang

Euncheol Do

Moonseok Kwon

Jihyun Jang

Hyunjae Song

Eunha Park

Inyong Song

Hosang Park

Jeongkuk Shon

Yoonsok Kang

Jaemyung Lee

Yoonhoi Lee

Inyoung Song

An electrolyte and a lithium secondary battery including the same. The electrolyte includes a lithium salt; an organic solvent; and at least one siloxane compound represented by Formula 1 or Formula 2, wherein an amount of the at least one siloxane compound is about 0.05 wt % to about 20 wt % based on a total weight of the electrolyte. In Formulae 1 and 2, group substituents and number indices are as defined in the specification.

Electrolyte containing siloxane compound and lithium secondary battery including the electrolyte

A lithium secondary battery includes: a positive electrode; a negative electrode; and an electrolyte between the positive electrode and the negative electrode, wherein the positive electrode includes a positive active material represented by Formula 1, and the electrolyte includes a lithium salt, a non-aqueous solvent, and a sulfone compound represented by Formula 2. wherein, in Formula 1, 0.9&#x2264;x&#x2264;1.2, 0.7&#x2264;y&#x2264;0.98, 0&#x2264;z&#x3c;0.2, M comprises Al, Mg, Mn, Co, Fe, Cr, V, Ti, Cu, B, Ca, Zn, Zr, Nb, Mo, Sr, Sb, W, Bi, or a combination thereof, and A is a monovalent anion, a divalent anion, or a combination thereof, and in Formula 2, Rand Rare each independently a halogen, an unsubstituted C-Calkyl group, or a C-Calkyl group substituted with a halogen, and a1 and a2 are each independently an integer from 0 to 5. 

Lithium secondary battery including sulfone-based additive

A lithium battery including: a cathode; an anode; and an electrolyte between the cathode and the anode, wherein the cathode includes a cathode active material represented by Formula 1,LiNiMOA&#x2003;&#x2003;Formula 1 

Lithium battery

An electrolyte including: a lithium salt; a non-aqueous solvent; a compound represented by Formula 1; and a compound represented by Formula 2 wherein R, R, R, R, and Rin Formulae 1 and 2 are as described in the detailed description.

Electrolyte, lithium secondary battery including the electrolyte, and method of manufacturing the electrolyte

A lithium secondary battery includes: a positive electrode; an negative electrode; and an electrolyte between the positive electrode and the negative electrode, wherein the positive electrode includes a positive active material represented by Formula 1, the electrolyte includes a lithium salt, a non-aqueous solvent, and a trialkoxyalkylsilane compound represented by Formula 2, and an amount of the trialkoxyalkylsilane compound in the electrolyte is about 0.1 weight percent to about 5 weight percent based on a total weight of the electrolyte: wherein, in Formula 1 and Formula 2, x, y, z, M, A, Rto R, and Ar are as defined as the specification.

Lithium secondary battery including electrolyte containing trialkoxyalkylsilane compound

An organic electrolyte solution includes a lithium salt; an organic solvent; and a fluorine-containing phosphate compound represented by Formula 1: 

Organic electrolyte solution and lithium battery including the same

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

A lithium secondary battery including a positive electrode including a positive active material represented by Formula 1; a negative electrode; and an electrolyte disposed between the positive electrode and the negative electrode, the electrolyte including a lithium salt; a nonaqueous solvent; and a cyclic compound represented by Formula 2, 

Lithium secondary battery comprising disulfonate additive and method of preparing the same

An electrochemical device includes a plurality of electrode assemblies arranged spaced apart from each other in a same direction and a casing member which packages the electrode assemblies, in which the casing member includes a plurality of accommodation portions which accommodates the electrode assemblies, respectively, and a connecting portion which connects between two adjacent accommodation portions, a thickness of the connecting portion is less than a thickness of the accommodation portions, and the connecting portion is bent defining a curved bending portion.

Flexible electrochemical device including electrode assembly

A negative electrode for a secondary battery, the negative electrode including: a current collector; an interlayer on the current collector and consisting of at least one first polymer selected from a cation-substituted polycarboxylic acid and a copolymer thereof; a negative electrode active material layer on the interlayer and which includes a negative electrode active material and a binder.

Negative electrode for secondary battery and secondary battery including the negative electrode

A flexible electrochemical device in which a plurality of electrode assemblies is electrically connected to each other so that the flexible electrochemical device may be repeatedly bent, includes at least two electrode assemblies that are arranged separate from each other and a casing member that packs the at least two electrode assemblies and includes at least two accommodation portions in which electrode assemblies are individually received, and a connecting portion that connects the at least two adjacent accommodation portions where a path between a conductive line that electrically connects at least two electrode assemblies together and an electrolyte is defined in the connecting portion.

Flexible electrochemical device including electrically connected electrode assemblies

An electrode assembly includes an electrode stack structure including a first electrode assembly sheet having flexibility and a second electrode assembly sheet having flexibility, where and the first and second electrode assemblies are alternately disposed one on another, and a binding unit which binds a portion of the electrode stack structure. The first electrode assembly sheet includes first and second separator films disposed to face each other, a first electrode sheet which is disposed between the first and second separator films and includes a first electrode collector and a first active material layer, and a first confining unit which restricts a movement of the first electrode sheet with respect to the first and second separator films.

Flexible electrode assembly and electrochemical device having the electrode assembly

A polymer including a first repeating unit including at least one carboxyl group substituted with a cation and a second repeating unit including at least one carboxyl group substituted with a moiety containing a dihydroxyphenyl group.

Polymer, binder and negative electrode including the polymer, and lithium battery including the negative electrode

An anode active material includes: a core including a metal or a metalloid that can incorporate and deincorporate lithium ions; and a plurality of coating layers on a surface of the core, each coating layer including a metal oxide, an amorphous carbonaceous material, or combination thereof. Also, a lithium battery including the anode active material, and a method of preparing the anode active material.

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Yongin-si, South Korea

Yeonji Chung