Samsung Sdi Co., Inc.

Robert Boschgmbh

Samsung Electronics Co., Ltd.

Sb Limotive Company Ltd.

Jongseok Moon

Chiyoung Lee

Seokyoon Yoo

Dongwook Kim

Tatsuya Hashimoto

Yoontai Kwak

Inhyuk Son

SeWon Kim

Kyueun Shim

Sungsoo Han

Jumyeung Lee

Mijong Kim

Sangwon Byun

Joongheon Kim

Sangeun Cheon

Taehyeon Kim

Dukjung Kim

Zin Min Park

Pilsang Yun

Kanghee Lee

Yongsam Kim

Minwoo Lim

Andrei Kapylou

Junyong Lee

Sungbae Kim

Taehwan Yu

Sangin Park

Seungyeol Yoo

Huijun Lee

Sungnim Jo

Byungkyu Ahn

Shin Jung Choi

Joonheon Kim

Misun Lee

Yunju Cho

Eui Ho Kim

Sunghoon Lee

Sewon Kim

A positive electrode, a lithium battery including the positive electrode, and a method of manufacturing the positive electrode are disclosed. The positive electrode includes: a composite positive active material and a binder. The composite positive active material includes: a core including a lithium transition metal oxide; and a shell on and conformed to a surface of the core. The shell includes: at least one first metal oxide represented by Formula MO; and a carbonaceous material. The at least one first metal oxide may be in a carbonaceous material matrix, and M is at least one metal selected from Groups 2 to 13 and 15 and 16. The positive active material layer includes a carbonaceous conductive agent, and the carbonaceous conductive agent is present only in the shell.

Positive electrode, lithium battery including positive electrode, and method of manufacturing positive electrode

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

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 negative active material including: a porous silicon-carbon secondary particle including: a plurality of silicon-carbon primary particles including a plurality of silicon-carbon primary particles including a silicon material, and a first carbonaceous material, wherein an apparent density of a silicon-carbon primary particle of the plurality of silicon-carbon primary particles is about 2 grams per cubic centimeter or greater; and a second carbonaceous material, wherein the second carbonaceous material is disposed on the plurality of silicon-carbon primary particles.

Negative active material, lithium secondary battery including the material, and method of manufacturing the material

The present invention relates to a cathode active material for a lithium secondary battery, a method for preparing the same, and a lithium secondary battery including the same. Provided is a cathode active material composed of a lithium-excess lithium metal composite compound including LiMnOhaving a layered structure, and doped with a fluoro compound, wherein an FWHM (half value width) value is within a range from 0.164 degree to 0.185 degree.

Cathode active material, method for preparing the same, and lithium secondary batteries including the same

A secondary battery according to embodiments of the present invention can reduce or prevent an uncoated portion and the rest of an electrode assembly from being damaged when the uncoated portion and a collector plate are coupled to each other using laser welding. The secondary battery includes a case having an internal space, an electrode assembly accommodated in the case, the electrode assembly having a coated portion coated with an active material and an uncoated portion without the active material, and a collector plate including a first collector plate and a second collector plate coupled to the uncoated portion, wherein first protrusions of the first collector plate and second protrusions of the second collector plate are engaged with each other with the uncoated portion interposed therebetween, and a boundary surface between the first protrusions and the second protrusions is configured to deviate with respect to a direction in which the collector plate is coupled to the uncoated portion.

Secondary battery

A secondary battery includes: a case; an electrode assembly housed in the case and including a first electrode, a second electrode, and a separator between the first electrode and the second electrode, the first electrode having a coating portion coated with a first active material and a non-coating portion absent the first active material; and a collector plate including first and second collector plates enmeshed together with the non-coating portion therebetween.

A secondary battery includes an electrode assembly having a first electrode plate, a second electrode plate, and a separator between the first electrode plate and the second electrode plate; a first electrode terminal; a first collecting plate having a first region contacting the first electrode plate or the second electrode plate, a second region extending at an angle to the first region, and a first reinforcement part that extends at an angle to both the first region and the second region; a case housing the electrode assembly and the first collecting plate; and a cap assembly sealing the case.

A secondary battery includes an electrode assembly, an insulation bag, a case, and a cap plate. The electrode assembly includes first and second electrodes, and a separator between the electrodes. The insulation bag has an open top and houses the electrode assembly. The case houses the electrode assembly and the insulation bag. The cap plate seals the case. The insulation bag includes first and second side surface portions, and first and second extending portions. The first and second side surface portions face one another and extend from one side to an opposite side. The first extending portion extends from an upper end of the first side surface portion at the one side. The second extending portion extends from an upper end of the second side surface portion at the opposite side.

Secondary battery having insulation bag

A secondary battery includes a case including an internal space, at least one electrode assembly in the case, the electrode assembly including a separator between a positive electrode plate and a negative electrode plate, and the positive and negative electrode plates including uncoated portions at edges of the electrode assembly, at least one current collector piece coupled to the uncoated portions of the electrode assembly, the at least one current collector piece being inserted into an interior region of the uncoated portions, a current collector terminal coupled to the current collector piece and protruding to an upper portion of the case, and a cap plate coupled to the upper portion of the case.

A secondary battery and an electric vehicle or hybrid electric vehicle, the secondary battery including a case; an electrode terminal coupled to an electrode assembly in the case; a nut fastened with the electrode terminal, the nut having a thread on an inner circumferential surface thereof; a cap plate hermetically sealing the case, the electrode terminal extending through the cap plate; and a seal gasket between the electrode terminal and the cap plate, the seal gasket being compressed by the nut, wherein the electrode terminal includes a flange part below a bottom surface of the cap plate, an insertion part passing through a through-hole of the cap plate, and a fastening part having a thread recess engaged with the thread of the nut, and wherein the nut is rotatably fastened with the fastening part of the electrode terminal, such that a front end of the thread contacts a back end of the thread recess when viewed from a rotation direction of the nut.

Secondary battery having electrode terminal fastened with nut

A secondary battery including an electrode assembly including a first electrode plate, a second electrode plate, and a separator disposed between the first electrode plate and the second electrode plate; a case accommodating the electrode assembly; a cap plate sealing the case; a first electrode terminal electrically connected to the first electrode plate and penetrating through the cap plate; and a safety valve coupled to the first electrode terminal, the safety valve including a bimetal element.

Secondary battery with a bimetal element on a top surface of a cap plate

A secondary battery including a case having an internal space; an electrode assembly in the case, the electrode assembly including a positive electrode, a negative electrode, a separator between the positive electrode and the negative electrode, and a non-coating portion; a collector plate, the collector plate including a plate section and a protrusion extending from the plate section, the protrusion being inserted into and coupled to the non-coating portion; a collector terminal coupled to one end of the collector plate, the collector terminal protruding upwardly from the case; and a cap plate coupled to a top end of the case and sealing the case.

A secondary battery includes an electrode assembly, a collector plate electrically connected to the electrode assembly and having a bottom surface support portion facing a bottom surface of the electrode assembly, and a case surrounding the electrode assembly and the collector plate.

Growing community of inventors

Yongin-si, South Korea

Jongseok Moon