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1. 发明授权

US09711783B2 Negative electrode for nonaqueous electrolyte secondary battery and nonaqueous electrolyte secondary battery 有权
公开(公告)号：US09711783B2
公开(公告)日：2017-07-18
申请号：US14762961
申请日：2014-01-10
申请人： SANYO Electric Co., Ltd. , Panasonic Corporation
发明人： Kazuto Fukuda , Ayano Toyoda , Shouichiro Sawa , Taizou Sunano
IPC分类号： H01M4/02 , H01M4/134 , H01M4/38 , H01M4/62 , H01M10/052
CPC分类号： H01M4/134 , H01M4/386 , H01M4/622 , H01M10/052 , H01M2004/021 , H01M2004/025 , H01M2004/027
摘要： 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.

2. 发明申请

US20150364752A1 NEGATIVE ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY 有权
标题翻译：非电解电解质二次电池和非电解电解质二次电池负极
公开(公告)号：US20150364752A1
公开(公告)日：2015-12-17
申请号：US14762961
申请日：2014-01-10
申请人： SANYO ELECTRIC CO., LTD. , PANASONIC CORPORATION
发明人： Kazuto Fukuda , Ayano Toyoda , Shouichiro Sawa , Taizou Sunano
IPC分类号： H01M4/134 , H01M4/62 , H01M10/052 , H01M4/38
CPC分类号： H01M4/134 , H01M4/386 , H01M4/622 , H01M10/052 , H01M2004/021 , H01M2004/025 , H01M2004/027
摘要： 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.
摘要翻译：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。

3. 发明申请

US20160049651A1 NEGATIVE ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY 审中-公开
标题翻译：非电解电解质二次电池和非电解电解质二次电池负极
公开(公告)号：US20160049651A1
公开(公告)日：2016-02-18
申请号：US14779824
申请日：2014-03-18
申请人： SANYO ELECTRIC CO., LTD.
发明人： Shouichiro Sawa , Ayano Toyoda , Taizou Sunano
IPC分类号： H01M4/38 , H01M10/052
CPC分类号： H01M4/382 , H01M4/134 , H01M4/386 , H01M10/052 , H01M2004/021 , H01M2220/20 , H01M2220/30 , Y02E60/122 , Y02T10/7011
摘要： A nonaqueous electrolyte secondary battery which has a good capacity retention ratio (cycle characteristics) and in which the expansion and shrinkage during charging and discharging are small compared with the case where a negative electrode made of only a negative electrode active material that forms an alloy with lithium is used. A negative electrode for a nonaqueous electrolyte secondary battery according to one aspect of the present invention includes a negative electrode mixture layer formed on a current collector and containing a binder and a negative electrode active material particle that forms an alloy with lithium. The negative electrode mixture layer includes pillar portions, and a value of S1/S2 is 0.46 or more and 0.58 or less, where S1 represents a total area of the pillar portions in plan view and S2 represents a total area of one surface of the negative electrode current collector in plan view.
摘要翻译：具有良好的容量保持率（循环特性）的非水电解质二次电池与充放电时的膨胀收缩相比，与仅由形成合金的负极活性物质形成的负极的情况相比，使用锂。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在集电体上形成并含有与锂形成合金的粘合剂和负极活性物质粒子的负极合剂层。负极合剂层包括柱部，S1 / S2的值为0.46以上且0.58以下，其中S1表示平面图中的柱部的总面积，S2表示负极的一个面的总面积电极集电器。

4. 发明授权

US09705135B2 Negative electrode for nonaqueous electrolyte secondary battery and nonaqueous electrolyte secondary battery 有权
公开(公告)号：US09705135B2
公开(公告)日：2017-07-11
申请号：US14779881
申请日：2014-03-19
申请人： SANYO Electric Co., Ltd.
发明人： Shouichiro Sawa , Ayano Toyoda , Taizou Sunano
IPC分类号： H01M4/134 , H01M4/78 , H01M4/62 , H01M4/38 , H01M4/02 , H01M10/052
CPC分类号： H01M4/78 , H01M4/134 , H01M4/386 , H01M4/622 , H01M10/052 , H01M2004/025 , H01M2004/027
摘要： There are provided a negative electrode for a nonaqueous electrolyte secondary battery having excellent initial efficiency and good moldability of pillar portions included in a negative electrode mixture layer, and a nonaqueous electrolyte secondary battery. A negative electrode (20) for a nonaqueous electrolyte secondary battery according to one aspect of the present invention includes a negative electrode current collector (21) and a negative electrode mixture layer (22) formed on the negative electrode current collector (21) and containing a binder and a negative electrode active material particle that forms an alloy with lithium. The negative electrode mixture layer (22) includes a base portion (22a) near the negative electrode current collector (21) and pillar portions (22b) formed on the base portion (21a). The binder contains a polyimide resin. The polyimide resin has an average molecular weight of 60000 or more.

5. 发明申请

US20160336586A1 NEGATIVE ELECTRODE ACTIVE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERIES 审中-公开
标题翻译：用于非电解电解质二次电池的负极电极活性材料
公开(公告)号：US20160336586A1
公开(公告)日：2016-11-17
申请号：US15112793
申请日：2015-01-22
申请人： SANYO ELECTRIC CO., LTD.
发明人： Kouhei Tuduki , Ayano Toyoda , Atsushi Fukui , Taizou Sunano
IPC分类号： H01M4/134 , H01M4/62 , H01M4/38 , H01M10/0525 , H01M4/36
CPC分类号： H01M4/134 , H01M4/366 , H01M4/386 , H01M4/62 , H01M10/0525 , H01M2004/027
摘要： Provided is a negative electrode active material, containing at least silicon, for nonaqueous electrolyte secondary batteries. Since the negative electrode active material contains silicon, the negative electrode active material has high capacity and excellent cycle characteristics. A negative electrode active material for nonaqueous electrolyte secondary batteries contains at least silicon. At least, one portion of the surface of each of primary particles containing silicon is covered with an inert phase made of a silicon compound with a silicon oxidation number higher than that of the silicon, a metal-silicon alloy, or metal. The primary particles containing silicon may form secondary particles. The silicon compound with a silicon oxidation number higher than that of silicon is preferably Li2Si2O5, Li2SiO3, or Li4SiO4. Furthermore, the metal-silicon alloy is preferably FeSi and the metal is preferably Ti. Furthermore, the crystallite size of silicon is 500 Å or less.
摘要翻译：提供一种负极活性物质，至少含有硅，用于非水电解质二次电池。由于负极活性物质含有硅，因此负极活性物质具有高容量和优异的循环特性。非水电解质二次电池用负极活性物质至少含有硅。至少有一部分含有硅的一次粒子的表面被硅氧化数高于硅，金属硅合金或金属的硅化合物制成的惰性相覆盖。含硅的初级颗粒可以形成二次颗粒。硅氧化数高于硅的硅化合物优选为Li 2 Si 2 O 5，Li 2 SiO 3或Li 4 SiO 4。此外，金属 - 硅合金优选为FeSi，金属优选为Ti。此外，硅的微晶尺寸为500以下。

6. 发明申请

US20160056475A1 NEGATIVE ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY 有权
标题翻译：非电解电解质二次电池和非电解电解质二次电池负极
公开(公告)号：US20160056475A1
公开(公告)日：2016-02-25
申请号：US14779881
申请日：2014-03-19
申请人： SANYO ELECTRIC CO., LTD.
发明人： Shouichiro Sawa , Ayano Toyoda , Taizou Sunano
IPC分类号： H01M4/78 , H01M4/38 , H01M10/052 , H01M4/62
CPC分类号： H01M4/78 , H01M4/134 , H01M4/386 , H01M4/622 , H01M10/052 , H01M2004/025 , H01M2004/027
摘要： There are provided a negative electrode for a nonaqueous electrolyte secondary battery having excellent initial efficiency and good moldability of pillar portions included in a negative electrode mixture layer, and a nonaqueous electrolyte secondary battery. A negative electrode (20) for a nonaqueous electrolyte secondary battery according to one aspect of the present invention includes a negative electrode current collector (21) and a negative electrode mixture layer (22) formed on the negative electrode current collector (21) and containing a binder and a negative electrode active material particle that forms an alloy with lithium. The negative electrode mixture layer (22) includes a base portion (22a) near the negative electrode current collector (21) and pillar portions (22b) formed on the base portion (21a). The binder contains a polyimide resin. The polyimide resin has an average molecular weight of 60000 or more.
摘要翻译：提供了一种非水电解质二次电池用负极，其具有优异的初期效率和良好的负极混合层中所含的柱状部分的成形性，以及非水电解质二次电池。根据本发明的一个方面的非水电解质二次电池用负极（20）包括在负极集电体（21）上形成的负极集电体（21）和负极合剂层（22），并含有与锂形成合金的粘合剂和负极活性物质粒子。所述负极合剂层（22）包括在所述负极集电体（21）附近的基部（22a）和形成在所述基部（21a）上的柱部（22b）。粘合剂含有聚酰亚胺树脂。聚酰亚胺树脂的平均分子量为60000以上。

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