公开(公告)号：US20160156031A1

公开(公告)日：2016-06-02

申请号：US14952052

申请日：2015-11-25

Applicant: Samsung Electronics Co., Ltd.

Inventor： Sewon KIM ,  Jongseok MOON ,  Kyueun SHIM ,  Sungnim JO ,  Taehwan YU

IPC: H01M4/38

CPC classification number: H01M4/386 ,  C01B33/029 ,  C01B33/03 ,  C01P2004/50 ,  C01P2004/51 ,  C01P2004/60 ,  C01P2006/12 ,  C01P2006/16 ,  H01M10/0525 ,  H01M2004/027

Abstract: An anode active material for a lithium secondary battery including a silicon secondary particle, wherein the silicon secondary particle is an agglomerate of an amorphous silicon primary particle and a crystalline silicon primary particle, and wherein the silicon secondary particle includes open pores, a size of the open pores is in a range of about 1 nm to about 10 μm, and each of the open pores are connected.

Abstract translation: 1.一种锂二次电池用负极活性物质，其包含硅二次粒子，其中所述硅二次粒子是非晶硅一次粒子和结晶硅一次粒子的附聚物，并且其中所述硅二次粒子包括开放孔， 开孔在约1nm至约10μm的范围内，并且每个开孔连接。

公开(公告)号：US20160329556A1

公开(公告)日：2016-11-10

申请号：US15108127

申请日：2014-08-22

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Kyueun SHIM ,  Jumyeung LEE ,  Donggyu CHANG ,  Wooyoung YANG

IPC: H01M4/134 ,  H01M4/36 ,  H01M10/0525 ,  H01M4/1395

CPC classification number: H01M4/134 ,  H01M4/1395 ,  H01M4/36 ,  H01M4/386 ,  H01M4/625 ,  H01M10/052 ,  H01M10/0525 ,  H01M2004/027

Abstract: 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.

Abstract translation: 本发明涉及一种锂二次电池用负极活性物质和锂二次电池的制造方法，提供了通过机械研磨或粉碎而制造的锂二次电池负极活性物质的制造方法， 在干燥或潮湿的条件下，通过结晶和非晶硅一次粒子聚结而形成二次粒子状态的微粒硅。

公开(公告)号：US20160190570A1

公开(公告)日：2016-06-30

申请号：US14904371

申请日：2014-07-08

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jumyeung LEE ,  Kyueun SHIM ,  Donggyu CHANG ,  Wooyoung Yang

IPC: H01M4/38 ,  H01M4/62 ,  H01M4/134 ,  H01M4/36 ,  H01M10/052

Abstract: Provided are an anode active material for a lithium secondary battery, and an anode composition and a lithium secondary battery including the anode active material. Silicon secondary particles, in which amorphous silicon primary particles and crystalline silicon primary particles are agglomerated, are used as an anode active material. The structural characteristics and internal pores of the silicon secondary particles act as a buffer for a volumetric change of particles, leading to a decrease in the volumetric expansion of an active material during charging and discharging. Accordingly, pulverization of silicon particles may be prevented, and ultimately, even when a charge and discharge cycle is repeatedly performed, the capacity is maintained, and thus, cycle lifespan characteristics are substantially improved.

Abstract translation: 提供了一种用于锂二次电池的负极活性材料，以及包含阳极活性材料的阳极组合物和锂二次电池。 将非晶硅一次粒子和结晶硅一次粒子聚集的硅二次粒子用作负极活性物质。 硅二次粒子的结构特征和内部孔隙作为颗粒体积变化的缓冲液，导致在充放电期间活性物质的体积膨胀减小。 因此，可以防止硅粒子的粉碎，最终，即使在重复进行充放电循环的情况下，也能够维持容量，从而显着提高循环寿命。

公开(公告)号：US20160329555A1

公开(公告)日：2016-11-10

申请号：US15107727

申请日：2014-08-08

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jumyeung LEE ,  Kyueun SHIM

IPC: H01M4/04 ,  H01M4/133 ,  H01M4/583 ,  H01M4/134 ,  C23C16/26 ,  C23C16/02 ,  H01M4/36 ,  H01M4/38 ,  H01M10/0525 ,  H01M4/62

CPC classification number: H01M4/0428 ,  C23C16/0272 ,  C23C16/26 ,  H01M4/133 ,  H01M4/134 ,  H01M4/366 ,  H01M4/386 ,  H01M4/483 ,  H01M4/583 ,  H01M4/621 ,  H01M4/625 ,  H01M10/052 ,  H01M10/0525

Abstract: 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.

Abstract translation: 锂二次电池用负极材料及其制造方法技术领域本发明涉及锂二次电池用负极材料及其制造方法以及包含该负极的锂二次电池。 本发明提供一种用于锂二次电池的负极材料，该材料包括其上形成化学气相沉积（CVD）碳涂覆膜的复合体，该复合物包含已经被硅烷表面处理的硅材料的无定形碳材料 偶联剂。