公开(公告)号：US09711783B2

公开(公告)日：2017-07-18

申请号：US14762961

申请日：2014-01-10

Applicant: SANYO Electric Co., Ltd. ,  Panasonic Corporation

Inventor： Kazuto Fukuda ,  Ayano Toyoda ,  Shouichiro Sawa ,  Taizou Sunano

IPC: H01M4/02 ,  H01M4/134 ,  H01M4/38 ,  H01M4/62 ,  H01M10/052

CPC classification number: H01M4/134 ,  H01M4/386 ,  H01M4/622 ,  H01M10/052 ,  H01M2004/021 ,  H01M2004/025 ,  H01M2004/027

Abstract: A negative electrode for a nonaqueous electrolyte secondary battery according to one aspect of the present invention includes a negative electrode mixture layer that contains a binder and a negative electrode active material particle that forms an alloy with lithium and is formed on a current collector. The negative electrode mixture layer includes a base portion near the current collector and pillar-shaped portions formed on the base portion. A negative electrode for a nonaqueous electrolyte secondary battery according to another aspect of the present invention includes a negative electrode mixture layer that contains a binder and a negative electrode active material particle that forms an alloy with lithium and is formed on a current collector. The negative electrode mixture layer includes pillar-shaped portions and the particle diameter of the negative electrode active material particle is 20% or less of the maximum diameter of the pillar-shaped portions.

公开(公告)号：US20150364752A1

公开(公告)日：2015-12-17

申请号：US14762961

申请日：2014-01-10

Applicant: SANYO ELECTRIC CO., LTD. ,  PANASONIC CORPORATION

Inventor： Kazuto Fukuda ,  Ayano Toyoda ,  Shouichiro Sawa ,  Taizou Sunano

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

CPC classification number: H01M4/134 ,  H01M4/386 ,  H01M4/622 ,  H01M10/052 ,  H01M2004/021 ,  H01M2004/025 ,  H01M2004/027

Abstract: A negative electrode for a nonaqueous electrolyte secondary battery according to one aspect of the present invention includes a negative electrode mixture layer that contains a binder and a negative electrode active material particle that forms an alloy with lithium and is formed on a current collector. The negative electrode mixture layer includes a base portion near the current collector and pillar-shaped portions formed on the base portion. A negative electrode for a nonaqueous electrolyte secondary battery according to another aspect of the present invention includes a negative electrode mixture layer that contains a binder and a negative electrode active material particle that forms an alloy with lithium and is formed on a current collector. The negative electrode mixture layer includes pillar-shaped portions and the particle diameter of the negative electrode active material particle is 20% or less of the maximum diameter of the pillar-shaped portions.

Abstract translation: 根据本发明的一个方面的非水电解质二次电池用负极包括含有粘合剂的负极混合物层和与锂形成合金并形成在集电体上的负极活性物质粒子。 负极复合层包括在集电体附近的基部和形成在基部上的柱状部。 根据本发明的另一方面的非水电解质二次电池用负极包括含有粘合剂的负极混合物层和与锂形成合金并形成在集电体上的负极活性物质粒子。 负极合剂层包括柱状部分，负极活性物质粒子的粒径为柱状部的最大直径的20％以下。