公开(公告)号：US10297820B2

公开(公告)日：2019-05-21

申请号：US15547675

申请日：2015-12-15

Applicant: LG Chem, Ltd.

Inventor： Yoon-Ah Kang ,  Yong-Ju Lee ,  Eun-Kyung Kim

IPC: H01M4/82 ,  H01M4/38 ,  H01M4/131 ,  H01M4/133 ,  H01M4/36 ,  H01M4/485 ,  H01M4/587 ,  H01M10/052 ,  H01M4/02 ,  H01M4/48 ,  H01M4/583 ,  H01M10/054

Abstract: An anode active material and a method for preparing the same, wherein the anode active material has a core-shell structure having formula (MOx-Liy)-C (here, M is a metal (or metalloid), x is greater than 0 and less than 1.5, and y is greater than 0 and less than 4) and including a core part containing an alloy of a metal (or metalloid) oxide-Li (MOx-Liy) and a shell part containing a carbon material coated on a surface of the core part, wherein the shell part contains lithium in an amount less than 5 atm % in the surface and the inner portion thereof. The anode active material can provide high capacity, excellent cycle characteristics, excellent volume expansion control capability, and high initial efficiency.

公开(公告)号：US20140322601A1

公开(公告)日：2014-10-30

申请号：US14326582

申请日：2014-07-09

Applicant: LG CHEM, LTD.

Inventor： Yong-Ju Lee ,  Yoon-Ah Kang ,  Je-Young Kim ,  Seung-Youn Choi ,  Mi-Rim Lee ,  Hye-Ran Jung ,  Jung-Woo Yoo

IPC: H01M4/38

CPC classification number: H01M4/386 ,  H01M4/0471 ,  H01M4/0483 ,  H01M4/0488 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/48 ,  H01M10/052 ,  H01M2004/021 ,  H01M2004/027

Abstract: The anode active material of the present invention comprises silicon-based particles obtained from at least one of silicon, a silicon oxide and a silicon alloy, and the silicon-based particles have a faceted shape, thereby providing high capacity and good life characteristics without causing any deterioration which has been generated in the use of conventional silicon-based particles, and eventually providing a lithium secondary battery having such characteristics.

Abstract translation: 本发明的负极活性物质包含由硅，氧化硅，硅合金中的至少一种得到的硅系粒子，硅基粒子具有小面形状，能够提供高容量且寿命特性良好而不引起 在使用常规硅基颗粒时产生的任何劣化，并且最终提供具有这种特性的锂二次电池。

公开(公告)号：US20180013142A1

公开(公告)日：2018-01-11

申请号：US15547675

申请日：2015-12-15

Applicant: LG Chem, Ltd.

Inventor： Yoon-Ah Kang ,  Yong-Ju Lee ,  Eun-Kyung Kim

IPC: H01M4/38 ,  H01M10/052 ,  H01M4/131 ,  H01M4/133 ,  H01M4/485 ,  H01M4/587 ,  H01M4/02

CPC classification number: H01M4/386 ,  H01M4/131 ,  H01M4/133 ,  H01M4/36 ,  H01M4/362 ,  H01M4/387 ,  H01M4/483 ,  H01M4/485 ,  H01M4/5835 ,  H01M4/587 ,  H01M10/052 ,  H01M10/054 ,  H01M2004/027 ,  Y02E60/122 ,  Y02P70/54 ,  Y02T10/7011

Abstract: The present invention provides an anode active material and a method for preparing the same, wherein the anode active material has a core-shell structure having formula (MOx-Liy)-C (here, M is a metal (or metalloid), x is greater than 0 and less than 1.5, and y is greater than 0 and less than 4) and including a core part containing an alloy of a metal (or metalloid) oxide-Li (MOx-Liy) and a shell part containing a carbon material coated on a surface of the core part, wherein the shell part contains lithium in an amount less than 5 atm % in the surface and the inner portion thereof. The anode active material can provide high capacity, excellent cycle characteristics, excellent volume expansion control capability, and high initial efficiency.

公开(公告)号：US09419276B2

公开(公告)日：2016-08-16

申请号：US14331385

申请日：2014-07-15

Applicant: LG Chem, Ltd.

Inventor： Yong-Ju Lee ,  Yoon-Ah Kang ,  Mi-Rim Lee ,  Je-Young Kim ,  Hye-Ran Jung

IPC: H01M4/02 ,  H01M4/36 ,  H01M4/134 ,  H01M4/38 ,  H01M4/04 ,  H01M4/131 ,  H01M4/133 ,  H01M4/1391 ,  H01M4/1393 ,  H01M4/1395 ,  H01M4/485 ,  H01M4/62 ,  H01M10/052 ,  H01M10/0525

CPC classification number: H01M4/366 ,  H01M4/0471 ,  H01M4/131 ,  H01M4/133 ,  H01M4/134 ,  H01M4/1391 ,  H01M4/1393 ,  H01M4/1395 ,  H01M4/38 ,  H01M4/386 ,  H01M4/387 ,  H01M4/405 ,  H01M4/48 ,  H01M4/485 ,  H01M4/587 ,  H01M4/625 ,  H01M10/052 ,  H01M10/0525 ,  Y02E60/122 ,  Y02P70/54

Abstract: The present disclosure relates to an anode active material comprising a composite of a core-shell structure, a lithium secondary battery comprising the same, and a method of manufacturing the anode active material. According to an aspect of the present disclosure, there is provided an anode active material of a core-shell structure comprising a core including alloyed (quasi)metal oxide-Li (MOx—Liy) and a shell including a carbon material coated on a surface of the core. According to another aspect of the present disclosure, there is provided a method of manufacturing the anode active material of the core-shell structure. According to an aspect of the present disclosure, an anode active material with high capacity, excellent cycle characteristics and volume expansion control capacity, and high initial efficiency is provided.

Abstract translation: 本公开涉及一种负极活性物质，其包含核 - 壳结构的复合物，包含该复合物的锂二次电池和制造阳极活性物质的方法。 根据本公开的一个方面，提供了一种核 - 壳结构的负极活性材料，其包括包含合金（准）金属氧化物-Li（MOx-Liy）的核和包含涂覆在表面上的碳材料的壳 的核心。 根据本公开的另一方面，提供了制造核 - 壳结构的负极活性材料的方法。 根据本公开的一个方面，提供了具有高容量，优异的循环特性和体积膨胀控制能力以及高初始效率的负极活性材料。

公开(公告)号：US11973219B2

公开(公告)日：2024-04-30

申请号：US16611645

申请日：2018-12-20

Applicant: LG CHEM, LTD.

Inventor： Oh-Byong Chae ,  Jun-Hyuk Song ,  Yoon-Ah Kang ,  Je-Young Kim ,  Sang-Wook Woo

IPC: H01M4/38 ,  H01M4/02 ,  H01M4/04 ,  H01M4/133 ,  H01M4/62 ,  H01M10/0525

CPC classification number: H01M4/382 ,  H01M4/0404 ,  H01M4/133 ,  H01M4/622 ,  H01M10/0525 ,  H01M2004/027 ,  H01M2004/028

Abstract: A method for pre-lithiation of a negative electrode is disclosed, including the steps of: producing a lithium metal laminate which includes i) lithium metal foil; and ii) a buffer layer including carbonaceous material particles, inorganic compound particles, polymer compound particles or their combination, and coated on one surface of the lithium metal foil; producing a negative electrode including a negative electrode current collector, and a negative electrode active material layer formed on at least one surface of the negative electrode current collector; and laminating the lithium metal laminate with the negative electrode in such a manner that the buffer layer of the lithium metal laminate is in contact with the negative electrode active material layer. A lithium metal laminate used for the method is also provided. The pre-lithiation of a negative electrode that includes a buffer layer reduces the problem of rapid volumetric swelling occurring.

公开(公告)号：US11271199B2

公开(公告)日：2022-03-08

申请号：US16604319

申请日：2018-08-17

Applicant: LG CHEM, LTD.

Inventor： Yoon-Ah Kang ,  Eun-Kyung Kim ,  Sang-Wook Woo ,  Oh-Byong Chae ,  Soo-Hee Kang ,  Geun-Sik Jo ,  So-Young Choo

IPC: H01M4/38 ,  H01M4/04 ,  H01M4/1395 ,  H01M10/0525 ,  G03F7/20 ,  G03F7/00 ,  H01M4/02

Abstract: A method for patterning a lithium metal surface, including the steps of (S1) forming an intaglio or relief pattern having a predetermined size on a patterning substrate; (S2) either (a) compressing lithium metal physically to a surface of the patterning substrate having the pattern formed thereon to form the predetermined pattern on the surface of the lithium metal, or (b) applying liquid lithium to the surface of the patterning substrate having the pattern formed thereon and solidifying the liquid lithium to form the predetermined pattern on the surface of the lithium metal; and (S3) separating the lithium metal having the predetermined pattern formed thereon from the patterning substrate, wherein the patterning substrate is at least one selected from a silicon wafer or polycarbonate substrate.

公开(公告)号：US10276864B2

公开(公告)日：2019-04-30

申请号：US14326582

申请日：2014-07-09

Applicant: LG Chem, Ltd.

Inventor： Yong-Ju Lee ,  Yoon-Ah Kang ,  Je-Young Kim ,  Seung-Youn Choi ,  Mi-Rim Lee ,  Hye-Ran Jung ,  Jung-Woo Yoo

IPC: H01M4/38 ,  H01M4/04 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/48 ,  H01M4/02 ,  H01M10/052 ,  C22C1/10

Abstract: The anode active material of the present invention comprises silicon-based particles obtained from at least one of silicon, a silicon oxide and a silicon alloy, and the silicon-based particles have a faceted shape, thereby providing high capacity and good life characteristics without causing any deterioration which has been generated in the use of conventional silicon-based particles, and eventually providing a lithium secondary battery having such characteristics.

公开(公告)号：US20140322611A1

公开(公告)日：2014-10-30

申请号：US14327692

申请日：2014-07-10

Applicant: LG Chem, Ltd.

Inventor： Yong-Ju Lee ,  Je-Young Kim ,  Tae-Hoon Kim ,  Cheol-Hee Park ,  Yoon-Ah Kang ,  Mi-Rim Lee ,  Hye-Ran Jung ,  Han-Nah Jeong

IPC: H01M4/36

CPC classification number: H01M4/366 ,  H01M4/0471 ,  H01M4/13 ,  H01M4/131 ,  H01M4/133 ,  H01M4/134 ,  H01M4/139 ,  H01M4/1393 ,  H01M4/483 ,  H01M4/485 ,  H01M4/587 ,  H01M4/625 ,  H01M10/0525 ,  Y02E60/122 ,  Y02P70/54 ,  Y02T10/7011

Abstract: The anode active material of the present invention comprises an amorphous SiOx C composite with a core-shell structure consisting of a core comprising particles of a silicon oxide (SiOx) free of Si crystals and a shell which is a coating layer formed on at least a part of the surface of the core and comprising a carbon material, thereby providing high capacity and effectively inhibiting volume expansion which has been caused in the use of Si, to improve life characteristics, and eventually providing a lithium secondary battery having such characteristics.

Abstract translation: 本发明的负极活性物质包括由包含不含Si晶体的氧化硅（SiO x）颗粒的芯构成的核 - 壳结构的无定形SiO x C复合体，以及形成在至少 芯的表面的一部分并且包括碳材料，从而提供高容量并且有效地抑制了在使用Si时引起的体积膨胀，以改善寿命特性，并最终提供具有这种特性的锂二次电池。

公开(公告)号：US20140322606A1

公开(公告)日：2014-10-30

申请号：US14331385

申请日：2014-07-15

Applicant: LG Chem, Ltd.

Inventor： Yong-Ju Lee ,  Yoon-Ah Kang ,  Mi-Rim Lee ,  Je-Young Kim ,  Hye-Ran Jung

IPC: H01M4/36

CPC classification number: H01M4/366 ,  H01M4/0471 ,  H01M4/131 ,  H01M4/133 ,  H01M4/134 ,  H01M4/1391 ,  H01M4/1393 ,  H01M4/1395 ,  H01M4/38 ,  H01M4/386 ,  H01M4/387 ,  H01M4/405 ,  H01M4/48 ,  H01M4/485 ,  H01M4/587 ,  H01M4/625 ,  H01M10/052 ,  H01M10/0525 ,  Y02E60/122 ,  Y02P70/54

Abstract: The present disclosure relates to an anode active material comprising a composite of a core-shell structure, a lithium secondary battery comprising the same, and a method of manufacturing the anode active material. According to an aspect of the present disclosure, there is provided an anode active material of a core-shell structure comprising a core including alloyed (quasi)metal oxide-Li (MOx—Liy) and a shell including a carbon material coated on a surface of the core. According to another aspect of the present disclosure, there is provided a method of manufacturing the anode active material of the core-shell structure. According to an aspect of the present disclosure, an anode active material with high capacity, excellent cycle characteristics and volume expansion control capacity, and high initial efficiency is provided.

Abstract translation: 本公开涉及一种负极活性物质，其包含核 - 壳结构的复合物，包含该复合物的锂二次电池和制造阳极活性物质的方法。 根据本公开的一个方面，提供了一种核 - 壳结构的负极活性材料，其包括包含合金（准）金属氧化物-Li（MOx-Liy）的核和包含涂覆在表面上的碳材料的壳 的核心。 根据本公开的另一方面，提供了制造核 - 壳结构的负极活性材料的方法。 根据本公开的一个方面，提供了具有高容量，优异的循环特性和体积膨胀控制能力以及高初始效率的负极活性材料。