公开(公告)号：US20120082895A1

公开(公告)日：2012-04-05

申请号：US13200653

申请日：2011-09-28

申请人： Yuta Kimura ,  Yuichiro Tago ,  Kenji Kodama ,  Satoshi Takemoto

发明人： Yuta Kimura ,  Yuichiro Tago ,  Kenji Kodama ,  Satoshi Takemoto

IPC分类号： H01M4/38

CPC分类号： H01M10/052 ,  H01M4/364 ,  H01M4/38 ,  H01M4/386 ,  H01M4/387

摘要： The present invention relates to a negative electrode active material for a lithium secondary battery, which has a composition containing Si in an amount of from 30 to 65% by mass and has a two phase matrix structure including an Sn—Cu based alloy matrix having an Sn content of 50% by mass or more, Si crystallites dispersed in the Sn—Cu based alloy matrix and an Si—X based alloy crystallized so as to at least partially cover the Si crystallites, in which X is at least one element selected from Fe, Ni and Co and is added in the Si—X based alloy in an amount of 1% by mass or more.

摘要翻译： 本发明涉及一种锂二次电池用负极活性物质，其具有含有30〜65质量％的Si的组成，具有包含Sn-Cu系合金基体的两相矩阵结构，所述Sn-Cu系合金基体具有 Sn含量为50质量％以上，分散在Sn-Cu系合金基体中的Si微晶和Si-X系合金结晶化，至少部分覆盖Si微晶，其中X为选自 Fe，Ni，Co中添加1质量％以上的Si-X系合金。

公开(公告)号：US08748040B2

公开(公告)日：2014-06-10

申请号：US13200653

申请日：2011-09-28

申请人： Yuta Kimura ,  Yuichiro Tago ,  Kenji Kodama ,  Satoshi Takemoto

发明人： Yuta Kimura ,  Yuichiro Tago ,  Kenji Kodama ,  Satoshi Takemoto

IPC分类号： H01M4/13 ,  H01M4/58

CPC分类号： H01M10/052 ,  H01M4/364 ,  H01M4/38 ,  H01M4/386 ,  H01M4/387

摘要： A negative electrode active material for a lithium secondary battery, which includes a composition including Si in an amount of from 30% to 65% by mass of the negative electrode active material, includes a two phase matrix structure including an Sn—Cu based alloy matrix including an Sn content of 50% by mass or more of the Sn—Cu based alloy matrix, Si crystallites dispersed in the Sn—Cu based alloy matrix, and an Si—X based alloy crystallized so as to at least partially cover the Si crystallites, in which X is at least one element selected from Fe, Ni, and Co, and is added in an amount of 1% by mass or more of the negative electrode active material.

摘要翻译： 作为负极活性物质的含有30质量％〜65质量％的Si的组合物的锂二次电池用负极活性物质，包括Sn-Cu系合金基体 包括Sn-Cu系合金基体的Sn含量为50质量％以上，分散在Sn-Cu系合金基体中的Si微晶，Si-X系合金，至少部分地覆盖Si微晶 其中X是选自Fe，Ni和Co中的至少一种元素，并且以负极活性物质的1质量％以上的量添加。

公开(公告)号：US08715857B2

公开(公告)日：2014-05-06

申请号：US13631530

申请日：2012-09-28

申请人： Yuta Kimura ,  Yuichiro Tago ,  Kozo Ozaki

发明人： Yuta Kimura ,  Yuichiro Tago ,  Kozo Ozaki

IPC分类号： H01M4/13 ,  H01M4/88

CPC分类号： H01M4/386 ,  B22F9/08 ,  C22C1/1042 ,  H01M4/134 ,  H01M4/387 ,  H01M4/622 ,  H01M2004/021

摘要： The present invention relates to a negative electrode active material including an Si—Sn—Fe—Cu based alloy, in which an Si phase has an area ratio in a range of from 35 to 80% in the entire negative electrode active material, the Si phase is dispersed in a matrix phase, the matrix phase contains an Si—Fe compound phase crystallized around the Si phase and further contains an Sn—Cu compound phase crystallized to surround the Si phase and the Si—Fe compound phase, the Si—Fe compound phase is crystallized in a ratio of from 35 to 90% in terms of an area ratio in the entire matrix phase, and the matrix phase further contains an Sn phase unavoidably crystallized in the matrix phase in a ratio of 15% or less in terms of an area ratio in the entire matrix phase.

摘要翻译： 本发明涉及包含Si-Sn-Fe-Cu基合金的负极活性物质，其中Si相在整个负极活性材料中的面积比范围为35-80％，Si相 相分散在基质相中，基体相包含在Si相周围结晶的Si-Fe化合物相，并且还包含结晶以包围Si相和Si-Fe化合物相的Sn-Cu化合物相，Si-Fe 化合物相以整个基体相的面积比为35〜90％的比例结晶化，基体相还含有不可避免地在基体相中结晶的Sn相，比例为15％以下 在整个基质相中的面积比。

公开(公告)号：US20130084498A1

公开(公告)日：2013-04-04

申请号：US13631530

申请日：2012-09-28

申请人： Yuta Kimura ,  Yuichiro Tago ,  Kozo Ozaki

发明人： Yuta Kimura ,  Yuichiro Tago ,  Kozo Ozaki

IPC分类号： H01M4/38 ,  H01M4/62

CPC分类号： H01M4/386 ,  B22F9/08 ,  C22C1/1042 ,  H01M4/134 ,  H01M4/387 ,  H01M4/622 ,  H01M2004/021

摘要： The present invention relates to a negative electrode active material including an Si—Sn—Fe—Cu based alloy, in which an Si phase has an area ratio in a range of from 35 to 80% in the entire negative electrode active material, the Si phase is dispersed in a matrix phase, the matrix phase contains an Si—Fe compound phase crystallized around the Si phase and further contains an Sn—Cu compound phase crystallized to surround the Si phase and the Si—Fe compound phase, the Si—Fe compound phase is crystallized in a ratio of from 35 to 90% in terms of an area ratio in the entire matrix phase, and the matrix phase further contains an Sn phase unavoidably crystallized in the matrix phase in a ratio of 15% or less in terms of an area ratio in the entire matrix phase,

摘要翻译： 本发明涉及包含Si-Sn-Fe-Cu基合金的负极活性物质，其中Si相在整个负极活性材料中的面积比范围为35-80％，Si相 相分散在基质相中，基体相包含在Si相周围结晶的Si-Fe化合物相，并且还包含结晶以包围Si相和Si-Fe化合物相的Sn-Cu化合物相，Si-Fe 化合物相以整个基体相的面积比为35〜90％的比例结晶化，基体相还含有不可避免地在基体相中结晶的Sn相，比例为15％以下 在整个矩阵相位中的面积比，