公开(公告)号：US11757090B2

公开(公告)日：2023-09-12

申请号：US15963873

申请日：2018-04-26

Applicant: Samsung SDI Co., Ltd.

Inventor： Deokhyun Kim ,  Jaehyuk Kim ,  Jaemyung Kim ,  Soonsung Suh ,  Hana Yoo ,  Yungu Cho ,  Heeyoung Chu

IPC: H01M4/36 ,  H01M4/48 ,  H01M4/62 ,  H01M4/38 ,  H01M4/134 ,  H01M10/0525 ,  H01M4/02

CPC classification number: H01M4/364 ,  H01M4/134 ,  H01M4/386 ,  H01M4/483 ,  H01M4/625 ,  H01M10/0525 ,  H01M2004/027

Abstract: Anode active materials for lithium secondary batteries are provided. According to embodiments of the present disclosure, an anode active material includes: i) a first composite including at least two active silicon materials having different crystal sizes and a silicon oxide (SiOx) material (wherein 0

公开(公告)号：US20220320509A1

公开(公告)日：2022-10-06

申请号：US17596927

申请日：2020-06-18

Applicant: Samsung SDI Co., Ltd.

Inventor： Heeyoung Chu ,  Doori Oh ,  Yungu Cho ,  Hyun Soh ,  Yoonyoung Choi ,  Ickkyu Choi

IPC: H01M4/583 ,  H01M4/38 ,  H01M10/0525 ,  H01M4/62

Abstract: The present disclosure relates to a composite anode and a secondary battery including the same, the composite anode including a silicon-containing structure; a first carbon material; a second carbon material; and a conductive material, wherein the first carbon material has a specific surface area (BET) value of 1.5 m2/g or less, a rate of change of the specific surface area (m2/g) to an increase in particle size (μm) is −0.07 to −0.04 m2/μm·g, and an area occupied by pores in a cross-section of the first carbon material is 10% or less.

公开(公告)号：US20160181598A1

公开(公告)日：2016-06-23

申请号：US14956293

申请日：2015-12-01

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Soonsung Suh ,  Jaehyuk Kim ,  Heeyoung Chu ,  Hana Yoo ,  Seunguk Kwon ,  Dukhyoung Yoon

IPC: H01M4/36 ,  H01M4/58 ,  H01M10/0525 ,  H01M4/38

CPC classification number: H01M4/366 ,  B22F1/025 ,  B22F2999/00 ,  C22C21/00 ,  C22C24/00 ,  H01M4/362 ,  H01M4/386 ,  H01M4/5825 ,  H01M10/0525 ,  H01M2220/20 ,  H01M2220/30 ,  Y02T10/7011 ,  B22F1/0018

Abstract: A negative active material includes a silicon-based alloy, wherein the silicon-based alloy includes silicon (Si); a first metal (M1) selected from titanium (Ti), vanadium (V), chromium (Cr), iron (Fe), cobalt (Co), nickel (Ni), copper (Cu), zinc (Zn), gallium (Ga), and germanium (Ge), and at least one additional element (A), which is included in the silicon-based alloy and on a surface of silicon-based alloy, selected from carbon (C), boron (B), sodium (Na), nitrogen (N), phosphorous (P), sulfur (S), and chlorine (Cl), and the silicon-based alloy has an internal porosity of about 35% or less. A lithium battery including the negative active material may have improved lifespan characteristics.

Abstract translation: 负极活性材料包括硅基合金，其中硅基合金包括硅（Si）; 选自钛（Ti），钒（V），铬（Cr），铁（Fe），钴（Co），镍（Ni），铜（Cu），锌（Zn） Ga）和锗（Ge）以及至少一种附加元素（A），其包含在硅基合金中以及硅基合金的表面上，所述硅基合金选自碳（C），硼（B）， 钠（Na），氮（N），磷（P），硫（S）和氯（Cl）），硅基合金的内部孔隙率为约35％以下。 包含负极活性物质的锂电池可以具有改善的寿命特性。

公开(公告)号：US10930921B2

公开(公告)日：2021-02-23

申请号：US15696779

申请日：2017-09-06

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Jaehyuk Kim ,  Soonsung Seo ,  Hana Yoo ,  Heeyoung Chu ,  Deokhyun Kim ,  Yungu Cho

IPC: H01M4/134 ,  H01M10/052 ,  H01M4/04 ,  H01M4/131 ,  H01M4/1395 ,  H01M4/36 ,  H01M4/38 ,  H01M4/48 ,  H01M4/485 ,  H01M4/52 ,  H01M10/0525

Abstract: Provided are a negative active material, an anode and a lithium secondary battery including the same, and a method of preparing the negative active material. The negative active material includes a silicon alloy core including silicon, iron, and manganese, and a shell including a metal oxide on the silicon alloy core, the metal oxide including one or more of titanium, zirconium, aluminum, cobalt, or lithium. An amount of the metal oxide may be from greater than 0 wt % to less than about 12 wt % based on a total weight of the negative active material.

公开(公告)号：US10553865B2

公开(公告)日：2020-02-04

申请号：US15227366

申请日：2016-08-03

Applicant: Samsung SDI Co., Ltd.

Inventor： Heeyoung Chu ,  Jaehyuk Kim ,  Soonsung Suh ,  Hana Yoo ,  Seunguk Kwon ,  Dukhyoung Yoon

IPC: H01M4/38 ,  H01M10/0525 ,  H01M10/0568 ,  H01M2/16 ,  H01M4/04 ,  H01M4/131 ,  H01M4/134 ,  H01M4/505 ,  H01M4/525 ,  H01M4/62 ,  H01M4/66 ,  H01M4/1395 ,  H01M10/0569 ,  H01M4/02

Abstract: A negative active material includes a silicon-based alloy, and the silicon-based alloy includes a Si single phase, a FeSi2 alpha phase, and a FeSi2 beta phase, wherein an intensity ratio of a second diffraction peak of the FeSi2 beta phase to a first diffraction peak of the FeSi2 alpha phase may be 0.1 or higher. A negative electrode includes the negative active material and a lithium battery includes the negative electrode. Lifespan characteristics of the lithium battery including the negative active material may improve.

公开(公告)号：US12230786B2

公开(公告)日：2025-02-18

申请号：US18355768

申请日：2023-07-20

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Deokhyun Kim ,  Jaehyuk Kim ,  Jaemyung Kim ,  Soonsung Suh ,  Hana Yoo ,  Yungu Cho ,  Heeyoung Chu

IPC: H01M4/36 ,  H01M4/134 ,  H01M4/38 ,  H01M4/48 ,  H01M4/62 ,  H01M4/02 ,  H01M10/0525

Abstract: Anode active materials for lithium secondary batteries are provided. According to embodiments of the present disclosure, an anode active material includes: i) a first composite including at least two active silicon materials having different crystal sizes and a silicon oxide (SiOx) material (wherein 0

公开(公告)号：US10164251B2

公开(公告)日：2018-12-25

申请号：US14956293

申请日：2015-12-01

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Soonsung Suh ,  Jaehyuk Kim ,  Heeyoung Chu ,  Hana Yoo ,  Seunguk Kwon ,  Dukhyoung Yoon

IPC: H01M4/36 ,  H01M4/58 ,  H01M10/0525 ,  H01M4/38 ,  C22C24/00 ,  B22F1/02 ,  C22C21/00

Abstract: A negative active material includes a silicon-based alloy, wherein the silicon-based alloy includes silicon (Si); a first metal (M1) selected from titanium (Ti), vanadium (V), chromium (Cr), iron (Fe), cobalt (Co), nickel (Ni), copper (Cu), zinc (Zn), gallium (Ga), and germanium (Ge), and at least one additional element (A), which is included in the silicon-based alloy and on a surface of silicon-based alloy, selected from carbon (C), boron (B), sodium (Na), nitrogen (N), phosphorous (P), sulfur (S), and chlorine (Cl), and the silicon-based alloy has an internal porosity of about 35% or less. A lithium battery including the negative active material may have improved lifespan characteristics.

公开(公告)号：US20170098825A1

公开(公告)日：2017-04-06

申请号：US15227366

申请日：2016-08-03

Applicant: Samsung SDI Co., Ltd.

Inventor： Heeyoung Chu ,  Jaehyuk Kim ,  Soonsung Suh ,  Hana Yoo ,  Seunguk Kwon ,  Dukhyoung Yoon

IPC: H01M4/38 ,  H01M4/04 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/62 ,  H01M10/0569 ,  H01M4/131 ,  H01M4/525 ,  H01M4/505 ,  H01M2/16 ,  H01M10/0568 ,  H01M10/0525 ,  H01M4/66

Abstract: A negative active material includes a silicon-based alloy, and the silicon-based alloy includes a Si single phase, a FeSi2 alpha phase, and a FeSi2 beta phase, wherein an intensity ratio of a second diffraction peak of the FeSi2 beta phase to a first diffraction peak of the FeSi2 alpha phase may be 0.1 or higher. A negative electrode includes the negative active material and a lithium battery includes the negative electrode. Lifespan characteristics of the lithium battery including the negative active material may improve.