公开(公告)号：US10199640B2

公开(公告)日：2019-02-05

申请号：US15103479

申请日：2014-12-12

申请人： LG Chem, Ltd.

发明人： Keiko Matsubara ,  Yoshiyuki Igarashi ,  Mi-Rim Lee ,  Hye-Ran Jung ,  Yong-Ju Lee

IPC分类号： H01M4/36 ,  H01M4/134 ,  H01M4/38 ,  C01B33/00 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/02

摘要： Alloy particles for negative electrode active material are proposed, which can impart anti-oxidation property to Si-containing alloy particles, and suppress oxidation of the negative electrode active material due to electrolyte at a considerably high level. A negative electrode material of secondary battery is achieved by a negative electrode material of secondary battery which is capable of intercalating and de-intercalating lithium and which consists of alloy particles including a silicon phase, a metal phase and bismuth, in which a crystallite size of the silicon phase is 10 nm or smaller, and the metal phase includes at least one kind of metal alloying with silicon but not with lithium, and the negative electrode material includes primary particles formed at least by the silicon and the metals.

公开(公告)号：US10115963B2

公开(公告)日：2018-10-30

申请号：US15102751

申请日：2014-12-10

申请人： LG Chem, Ltd.

发明人： Keiko Matsubara ,  Yoshiyuki Igarashi

IPC分类号： H01M4/36 ,  H01M4/58 ,  H01M10/05 ,  H01M4/13 ,  H01M4/62 ,  H01M4/587 ,  H01M10/052 ,  H01M4/134 ,  H01M4/38 ,  H01M4/133 ,  H01M4/1393 ,  H01M4/1395 ,  H01M10/0525 ,  H01M4/02

摘要： A negative electrode active material is provided, which can reduce and suppress ratio of expansion of silicon, provide enhanced conductivity, and realize superior charge/discharge cycle characteristic. The negative electrode material for secondary battery capable of occluding and releasing lithium consists of alloy particles having a silicon phase and a metal phase, and a carbonaceous material, in which crystallite size of the silicon phase is 10 nm or less, and the metal phase includes two or more kinds of metals alloying with silicon but not with lithium, and the carbonaceous material has crystallite size of 30 nm or more, and the carbonaceous material is present on the surface of, or within the alloy particles.

公开(公告)号：US20180069237A1

公开(公告)日：2018-03-08

申请号：US15573669

申请日：2016-05-30

申请人： LG Chem, Ltd.

发明人： Keiko Matsubara ,  Yoshiyuki Igarashi

IPC分类号： H01M4/38 ,  H01M4/134 ,  H01M4/62 ,  H01M10/0525

CPC分类号： H01M4/386 ,  H01M4/0488 ,  H01M4/134 ,  H01M4/38 ,  H01M4/62 ,  H01M4/625 ,  H01M10/0525 ,  H01M2004/027

摘要： Provided is an anode material for a secondary battery which reduces and inhibits swelling of a high-capacity silicon-containing alloy material to realize excellent charge/discharge cycle characteristics. The anode material includes alloy particles containing a transition metal which has electron conductivity, is difficult to react with lithium atoms and is at least one selected from the group of metals that belong to transition metals, and silicon, wherein the alloy particles include amorphous silicon, and silicide microcrystals formed by silicon and the transition metal, and the silicide microcrystals are scattered in amorphous silicon.

公开(公告)号：US10862115B2

公开(公告)日：2020-12-08

申请号：US15573669

申请日：2016-05-30

申请人： LG Chem, Ltd.

发明人： Keiko Matsubara ,  Yoshiyuki Igarashi

IPC分类号： H01M4/38 ,  H01M4/04 ,  H01M4/58 ,  H01M4/62 ,  H01M4/134 ,  H01M10/0525 ,  H01M4/583 ,  H01M4/02

摘要： Provided is an anode material for a secondary battery which reduces and inhibits swelling of a high-capacity silicon-containing alloy material to realize excellent charge/discharge cycle characteristics. The anode material includes alloy particles containing a transition metal which has electron conductivity, is difficult to react with lithium atoms and is at least one selected from the group of metals that belong to transition metals, and silicon, wherein the alloy particles include amorphous silicon, and silicide microcrystals formed by silicon and the transition metal, and the silicide microcrystals are scattered in amorphous silicon.

公开(公告)号：US20160308196A1

公开(公告)日：2016-10-20

申请号：US15103479

申请日：2014-12-12

申请人： LG CHEM, LTD.

发明人： Keiko Matsubara ,  Yoshiyuki Igarashi ,  Mi-Rim Lee ,  Hye-Ran Jung ,  Yong-Ju Lee

IPC分类号： H01M4/36 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/134 ,  H01M4/38

CPC分类号： H01M4/364 ,  C01B33/00 ,  H01M4/134 ,  H01M4/386 ,  H01M4/628 ,  H01M10/0525 ,  H01M2004/027

摘要： Alloy particles for negative electrode active material are proposed, which can impart anti-oxidation property to Si-containing alloy particles, and suppress oxidation of the negative electrode active material due to electrolyte at a considerably high level. A negative electrode material of secondary battery is achieved by a negative electrode material of secondary battery which is capable of intercalating and de-intercalating lithium and which consists of alloy particles including a silicon phase, a metal phase and bismuth, in which a crystallite size of the silicon phase is 10 nm or smaller, and the metal phase includes at least one kind of metal alloying with silicon but not with lithium, and the negative electrode material includes primary particles formed at least by the silicon and the metals.

摘要翻译： 提出了用于负极活性物质的合金颗粒，其可以赋予含Si合金颗粒抗氧化性能，并且抑制由于电解质在相当高的水平上的负极活性物质的氧化。 二次电池的负极材料是通过二次电池的负极材料实现的，该二次电池的负极材料能够嵌入和脱嵌锂，并由包含硅相，金相和铋的合金颗粒组成，其中微晶尺寸为 硅相为10nm以下，金属相包含至少一种与硅而不与锂合金化的金属，负极材料包括至少由硅和金属形成的一次粒子。