Samsung Electronics Co., Ltd.

Samsung Sdi Co., Inc.

Jumyeung Lee

Inhyuk Son

Sungsoo Han

Mijong Kim

Minwoo Lim

Junghyun Choi

Kyueun Shim

SeWon Kim

Jongseok Moon

Sangkook Mah

Wooyoung Yang

Jungho Lee

Donggyu Chang

Seongyong Park

JungHyun Choi

Sewon Kim

A porous silicon composite includes: a porous core including a porous silicon composite secondary particle; and a shell disposed on a surface of the porous core and surrounding the porous core, wherein the porous silicon composite secondary particle includes an aggregate of silicon composite primary particles, each including silicon, a silicon suboxide on a surface of the silicon, and a first graphene on a surface of the silicon suboxide, wherein the shell include a second graphene, and at least one of the first graphene and the second graphene includes at least one element selected from nitrogen, phosphorus, and sulfur.

Silicon composite cluster and carbon composite thereof, and electrode, lithium battery, and electronic device each including the same

A porous silicon-containing composite includes: a porous core including a porous silicon composite secondary particle; and a shell on at least one surface of the porous core, the shell including a first graphene, wherein the porous silicon composite secondary particle includes an aggregate of a first primary particle including silicon, a second primary particle including a structure and second graphene on at least one surface of the first primary particle and the second primary particle, and wherein at least one of a shape and a degree of oxidation of the first primary particle and the second primary particle are different. Also an electrode including the porous silicon-containing composite, a lithium battery including the electrode, and a device including the porous silicon-containing composite or the carbon composite.

Porous silicon-containing composite, carbon composite using the same, and electrode, lithium battery and electronic device each including the same

A porous silicon composite including: a porous silicon composite cluster comprising a porous silicon composite secondary particle and a second carbon flake on at least one surface of the porous silicon composite secondary particle; and a carbonaceous layer on the porous silicon composite cluster, the carbonaceous layer comprising amorphous carbon, wherein the porous silicon composite secondary particle comprises an aggregate of two or more silicon primary particles, the two or more silicon primary particles comprise silicon, a silicon suboxide of the formula SiO, wherein 0&#x3c;x&#x3c;2 on a surface of the silicon, and a first carbon flake on at least one surface of the silicon suboxide, the silicon suboxide is in a form of a film, a matrix, or a combination thereof, and the first carbon flake and the second carbon flake are each independently present in a form of a film, particles, a matrix, or a combination thereof. Also a method of preparing the porous silicon composite, a carbon composite, an electrode, and a device, each including the porous silicon composite, and a lithium battery including the electrode.

Porous silicon composite cluster structure, method of preparing the same, carbon composite using the same, and electrode, lithium battery, and device each including the same

An electrode composite conducting agent for a lithium battery includes a carbonaceous conductive material, and the graphene-silica composite, wherein the graphene-silica composite includes a matrix including graphene, and a silicon suboxide of the formula SiOwherein 0&#x3c;x&#x3c;2, or a combination of silicon dioxide and silicon suboxide of the formula SiOwherein 0&#x3c;x&#x3c;2, or a combination thereof, wherein an amount of the graphene-silica composite is 20 parts by weight or less, based on 100 parts by weight of a total weight of the composite conducting agent. Also an electrode for a lithium battery including the electrode composite conducting agent, a method of manufacturing the electrode, and a lithium battery including the electrode.

Electrode composite conducting agent for lithium battery, electrode for lithium battery, method of manufacturing the same, and lithium battery including the electrode

A silicon-containing structure including: a silicon composite including a porous silicon secondary particle and a first carbon flake on a surface of the porous silicon secondary particle; a carbonaceous coating layer on the porous silicon composite, the carbonaceous coating layer comprising a first amorphous carbon; and the silicon composite comprises a second amorphous carbon and has a density that is equal to or less than a density of the carbonaceous coating layer, wherein the porous silicon secondary particle includes an aggregate of silicon composite primary particles, each including silicon, a silicon suboxide on a surface of the silicon, and a second carbon flake on a surface of the silicon suboxide.

Silicon-containing structure, method of preparing the same, carbon composite using the same, and electrode, lithium battery, and device each including the same

A porous silicon composite cluster comprising: a porous core comprising a porous silicon composite secondary particle, wherein the silicon composite secondary particle comprises an aggregate of two or more silicon composite primary particles, and the silicon composite primary particles each comprise silicon, a silicon oxide of the Formula SiO, wherein 0&#x3c;x&#x3c;2, disposed on the silicon, and a first graphene disposed on the silicon oxide; and a shell disposed on and surrounding the core, the shell comprising a second graphene.

Porous silicon composite cluster and carbon composite thereof, and electrode, lithium battery, field emission device, biosensor and semiconductor device each including the same

The present invention relates to a production method for a negative electrode active material for a lithium secondary battery, and to a lithium secondary battery, and provides a production method for a lithium secondary battery negative electrode active material that is produced by mechanically grinding or crushing, in dry or wet conditions, particulate silicon, which is in a secondary particle state formed by agglomerating crystalline and amorphous silicon primary particles.

Production method for negative electrode active material for lithium secondary battery, and lithium secondary battery

The present invention relates to a negative electrode material for a lithium secondary battery, a method for producing same, and a lithium secondary battery comprising same as a negative electrode. The present invention provides a negative electrode material for a lithium secondary battery, the material comprising a complex in which a chemical vapor deposition (CVD) carbon coating film is formed on an amorphous carbon material comprising a silicon material that has been surface treated by a silane coupling agent.

Negative electrode material for lithium secondary battery, production method for same, and lithium secondary battery comprising same as negative electrode

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Suwon-si, South Korea

Jumyeung Lee