公开(公告)号：US20140050974A1

公开(公告)日：2014-02-20

申请号：US14114099

申请日：2012-01-12

申请人： Takuhiro Miyuki ,  Toshikatsu Kojima ,  Yasue Okuyama ,  Tetsuo Sakai ,  Masataka Nakanishi ,  Junichi Niwa ,  Kazuhito Kawasumi ,  Satoshi Nakagawa ,  Akira Kojima

发明人： Takuhiro Miyuki ,  Toshikatsu Kojima ,  Yasue Okuyama ,  Tetsuo Sakai ,  Masataka Nakanishi ,  Junichi Niwa ,  Kazuhito Kawasumi ,  Satoshi Nakagawa ,  Akira Kojima

IPC分类号： H01M4/583

CPC分类号： H01M4/583 ,  H01M4/136 ,  H01M4/38 ,  H01M4/62 ,  H01M4/625 ,  H01M10/054

摘要： Because of being equipped with a positive electrode, a negative electrode and a sodium-ion nonaqueous electrolyte, and because the positive electrode includes a sulfur-based positive-electrode active material containing carbon (C) and sulfur (S), it is possible to inhibit sulfur from eluting out into electrolytic solution, thereby resulting in a sodium secondary battery that makes it feasible to undergo charging and discharging for 100 cycles or more reversibly.

摘要翻译： 由于配置有正极，负极和钠离子非水电解质，并且由于正极包含含有碳（C）和硫（S）的硫系正极活性物质，因此， 抑制硫析出到电解液中，从而得到可以进行100次循环或更多次充放电的钠二次电池。

公开(公告)号：US09330805B2

公开(公告)日：2016-05-03

申请号：US14351714

申请日：2012-07-26

申请人： Akira Kojima ,  Toshikatsu Kojima ,  Mitsuharu Tabuchi ,  Tetsuo Sakai ,  Masanori Morishita ,  Takuhiro Miyuki ,  Junichi Niwa ,  Masataka Nakanishi ,  Yuya Sato ,  Kazuhito Kawasumi ,  Masakazu Murase

发明人： Akira Kojima ,  Toshikatsu Kojima ,  Mitsuharu Tabuchi ,  Tetsuo Sakai ,  Masanori Morishita ,  Takuhiro Miyuki ,  Junichi Niwa ,  Masataka Nakanishi ,  Yuya Sato ,  Kazuhito Kawasumi ,  Masakazu Murase

IPC分类号： H01B1/06 ,  C01B33/20 ,  C01B33/32 ,  H01M4/58 ,  H01M4/62 ,  H01M4/136 ,  H01M10/0525

CPC分类号： H01B1/06 ,  C01B33/20 ,  C01B33/32 ,  C01P2002/72 ,  H01M4/136 ,  H01M4/5825 ,  H01M4/625 ,  H01M10/0525

摘要： Provided is a novel lithium silicate-based material useful as a positive electrode material for lithium ion secondary battery.The lithium silicate-based compound is represented by Li1.5FeSiO4.25. The lithium silicate-based compound is a compound including: lithium (Li); iron (Fe); silicon (Si); and oxygen (O), and expressed by a composition formula, Li1+2δFeSiO4+δ−c (−0.25≦δ≦0.25, 0≦c≦0.5). The lithium silicate-based compound, of which iron (Fe) is trivalent, exerts a remarkable chemical stability as compared to Li2FeSiO4.

摘要翻译： 提供了可用作锂离子二次电池的正极材料的新型的硅酸锂基材料。 硅酸锂基化合物由Li1.5FeSiO4.25表示。 所述硅酸锂系化合物为包括：锂（Li）; 铁（Fe）; 硅（Si）; 和氧（O），并由组成式表示Li1 +2δFeSiO4+δ-c（-0.25＆nlE;δ＆nlE; 0.25,0＆nlE; c＆nlE; 0.5）。 铁（Fe）为三价的硅酸锂系化合物与Li 2 FeSiO 4相比，具有显着的化学稳定性。

公开(公告)号：US20140231721A1

公开(公告)日：2014-08-21

申请号：US14351714

申请日：2012-07-26

申请人： Akira Kojima ,  Toshikatsu Kojima ,  Mitsuharu Tabuchi ,  Tetsuo Sakai ,  Masanori Morishita ,  Takuhiro Miyuki ,  Junichi Niwa ,  Masataka Nakanishi ,  Yuya Sato ,  Kazuhito Kawasumi ,  Masakazu Murase

发明人： Akira Kojima ,  Toshikatsu Kojima ,  Mitsuharu Tabuchi ,  Tetsuo Sakai ,  Masanori Morishita ,  Takuhiro Miyuki ,  Junichi Niwa ,  Masataka Nakanishi ,  Yuya Sato ,  Kazuhito Kawasumi ,  Masakazu Murase

IPC分类号： H01M4/58 ,  H01M4/62

CPC分类号： H01B1/06 ,  C01B33/20 ,  C01B33/32 ,  C01P2002/72 ,  H01M4/136 ,  H01M4/5825 ,  H01M4/625 ,  H01M10/0525

摘要： Provided is a novel lithium silicate-based material useful as a positive electrode material for lithium ion secondary battery.The lithium silicate-based compound is represented by Li1.5FeSiO4.25 The lithium silicate-based compound is a compound including: lithium (Li); iron (Fe); silicon (Si); and oxygen (O), and expressed by a composition formula, Li1+2δFeSiO4+δ−c(−0.25≦δ≦0.25, 0≦c≦0.5). The lithium silicate-based compound, of which iron (Fe) is trivalent, exerts a remarkable chemical stability as compared to Li2FeSiO4.

摘要翻译： 提供了可用作锂离子二次电池的正极材料的新型的硅酸锂基材料。 硅酸锂基化合物由Li1.5FeSiO4.25表示。硅酸锂基化合物是包括锂（Li）的化合物; 铁（Fe）; 硅（Si）; 和氧（O），并由组成式表示Li1 +2δFeSiO4+δ-c（-0.25＆nlE;δ＆nlE; 0.25,0＆nlE; c＆nlE; 0.5）。 铁（Fe）为三价的硅酸锂系化合物与Li 2 FeSiO 4相比具有显着的化学稳定性。

公开(公告)号：US20130078519A1

公开(公告)日：2013-03-28

申请号：US13701746

申请日：2011-06-17

申请人： Toshikatsu Kojima ,  Takuhiro Miyuki ,  Tetsuo Sakai ,  Akira Kojima ,  Junichi Niwa ,  Hitotoshi Murase ,  Kazuhito Kawasumi

发明人： Toshikatsu Kojima ,  Takuhiro Miyuki ,  Tetsuo Sakai ,  Akira Kojima ,  Junichi Niwa ,  Hitotoshi Murase ,  Kazuhito Kawasumi

IPC分类号： C01B33/32 ,  H01M4/1395 ,  H01M4/131

CPC分类号： C01B33/32 ,  H01M4/131 ,  H01M4/1395 ,  H01M4/5825 ,  H01M10/052

摘要： A production process for lithium-silicate-based compound according to the present invention is characterized in that: a lithium-silicate compound being expressed by Li2SiO3 is reacted with a transition-metal-element-containing substance including at least one member being selected from the group consisting of iron and manganese at 550° C. or less within a molten salt including at least one member being selected from the group consisting of alkali-metal nitrates as well as alkali-metal hydroxides in an atmosphere in the presence of a mixed gas including carbon dioxide and a reducing gas.In accordance with the present invention, it is possible to produce lithium-silicate-based materials, which are useful as a positive-electrode active material for lithium-ion secondary battery, and the like, at low temperatures by means of relatively easy means.

摘要翻译： 根据本发明的基于硅酸锂的化合物的制备方法的特征在于：由Li 2 SiO 3表示的硅酸锂化合物与含过渡金属元素的物质反应，所述过渡金属元素的物质包括至少一种选自 在包含至少一种选自碱金属硝酸盐和碱金属氢氧化物的组分的熔融盐中，在550℃或更低的温度下，在气氛中，在混合气体存在下， 包括二氧化碳和还原气体。 根据本发明，可以通过相对容易的手段在低温下制造可用作锂离子二次电池用正极活性物质等的硅酸锂系材料。

公开(公告)号：US20130183584A1

公开(公告)日：2013-07-18

申请号：US13824913

申请日：2011-10-31

申请人： Toshikatsu Kojima ,  Mitsuharu Tabuchi ,  Takuhiro Miyuki ,  Tetsuo Sakai ,  Akira Kojima ,  Junichi Niwa ,  Kazuhito Kawasumi

发明人： Toshikatsu Kojima ,  Mitsuharu Tabuchi ,  Takuhiro Miyuki ,  Tetsuo Sakai ,  Akira Kojima ,  Junichi Niwa ,  Kazuhito Kawasumi

IPC分类号： H01M4/505 ,  H01M4/134 ,  H01M4/131

CPC分类号： H01M4/505 ,  C01B33/32 ,  H01M4/131 ,  H01M4/134 ,  H01M4/1391 ,  H01M4/485 ,  H01M4/5825 ,  H01M10/0525

摘要： A production process for lithium-silicate-based compound is characterized in that: a lithium-silicate compound is reacted with a transition-metal-element-containing substance including iron and/or manganese at from 300° C. or more to 600° C. or less within a molten salt including at least one member being selected from the group consisting of alkali-metal salts under a mixed-gas atmosphere including carbon dioxide and a reducing gas; wherein said transition-metal-element-containing substance includes a deposit that is formed by alkalifying a transition-metal-containing aqueous solution including a compound that includes iron and/or manganese. In accordance with the present production process, lithium-silicate-based compounds including silicon excessively are obtainable. In accordance with the present invention, it is possible to produce materials, which have better battery characteristics than do conventional ones, by means of relatively easy means, regarding lithium-silicate-based materials that are useful as a positive-electrode material for secondary battery.

摘要翻译： 基于硅酸锂的化合物的制备方法的特征在于：在300℃或更高至600℃下使硅酸锂化合物与含铁和/或锰的含过渡金属元素的物质反应 在包含二氧化碳和还原气体的混合气体气氛中的包含至少一种选自碱金属盐的熔融盐的熔融盐中， 其中所述含过渡金属元素的物质包括通过使包含含铁和/或锰的化合物的含过渡金属的水溶液碱化而形成的沉积物。 根据本制造方法，可以获得包含硅的硅酸锂系化合物。 根据本发明，可以通过相对容易的手段生产具有比常规电池特性更好的电池特性的材料，关于可用作二次电池正极材料的硅酸锂基材料 。

公开(公告)号：US09269954B2

公开(公告)日：2016-02-23

申请号：US13147747

申请日：2009-11-20

申请人： Toshikatsu Kojima ,  Tetsuo Sakai ,  Takuhiro Miyuki ,  Yasue Okuyama ,  Akira Kojima ,  Junichi Niwa ,  Hitotoshi Murase

发明人： Toshikatsu Kojima ,  Tetsuo Sakai ,  Takuhiro Miyuki ,  Yasue Okuyama ,  Akira Kojima ,  Junichi Niwa ,  Hitotoshi Murase

IPC分类号： H01B1/06 ,  H01M4/88 ,  H01M4/58 ,  C01B33/32 ,  H01M10/052

CPC分类号： H01M4/5825 ,  C01B33/32 ,  H01M10/052 ,  Y02E60/122 ,  Y02P70/54

摘要： The present invention is one which provides a production process for lithium-silicate-system compound, the production process being characterized in that: a lithium-silicate compound being expressed by Li2SiO3 is reacted with a substance including at least one member of transition-metal elements that is selected from the group consisting of iron and manganese at 400-650° C. in a molten salt of a carbonate mixture comprising lithium carbonate and at least one member of alkali-metal carbonates that is selected from the group consisting of potassium carbonate, sodium carbonate, rubidium carbonate and cesium carbonate in a mixed-gas atmosphere including carbon dioxide and a reducing gas; and a positive-electrode active material for lithium-ion secondary battery that comprises a lithium-silicate-system compound being obtained by the aforesaid process.

摘要翻译： 本发明是提供一种硅酸锂系化合物的制造方法，其制造方法的特征在于：将由Li 2 SiO 3表示的硅酸锂化合物与包含至少一种过渡金属元素的物质 选自铁和锰在400-650℃的碳酸盐混合物的熔融盐中的碳酸盐混合物，所述碳酸盐混合物包含碳酸锂和至少一种碱金属碳酸盐成员，所述碱金属碳酸盐选自碳酸钾， 碳酸钠，碳酸铷和碳酸铯在包括二氧化碳和还原气体的混合气体气氛中; 以及锂离子二次电池用正极活性物质，其包含通过上述方法得到的硅酸锂系化合物。

公开(公告)号：US09315390B2

公开(公告)日：2016-04-19

申请号：US13701746

申请日：2011-06-17

申请人： Toshikatsu Kojima ,  Takuhiro Miyuki ,  Tetsuo Sakai ,  Akira Kojima ,  Junichi Niwa ,  Hitotoshi Murase ,  Kazuhito Kawasumi

发明人： Toshikatsu Kojima ,  Takuhiro Miyuki ,  Tetsuo Sakai ,  Akira Kojima ,  Junichi Niwa ,  Hitotoshi Murase ,  Kazuhito Kawasumi

IPC分类号： C01B33/32 ,  H01M4/1395 ,  H01M4/131 ,  H01M4/58 ,  H01M10/052

CPC分类号： C01B33/32 ,  H01M4/131 ,  H01M4/1395 ,  H01M4/5825 ,  H01M10/052

摘要： A production process for lithium-silicate-based compound according to the present invention is characterized in that: a lithium-silicate compound being expressed by Li2SiO3 is reacted with a transition-metal-element-containing substance including at least one member being selected from the group consisting of iron and manganese at 550° C. or less within a molten salt including at least one member being selected from the group consisting of alkali-metal nitrates as well as alkali-metal hydroxides in an atmosphere in the presence of a mixed gas including carbon dioxide and a reducing gas. In accordance with the present invention, it is possible to produce lithium-silicate-based materials, which are useful as a positive-electrode active material for lithium-ion secondary battery, and the like, at low temperatures by means of relatively easy means.

摘要翻译： 根据本发明的基于硅酸锂的化合物的制备方法的特征在于：由Li 2 SiO 3表示的硅酸锂化合物与含过渡金属元素的物质反应，所述过渡金属元素的物质包括至少一种选自 在包含至少一种选自碱金属硝酸盐和碱金属氢氧化物的组分的熔融盐中，在550℃或更低的温度下，在气氛中，在混合气体存在下， 包括二氧化碳和还原气体。 根据本发明，可以通过相对容易的手段在低温下制造可用作锂离子二次电池用正极活性物质等的硅酸锂系材料。

公开(公告)号：US20140127585A1

公开(公告)日：2014-05-08

申请号：US14122023

申请日：2012-03-16

申请人： Akira Kojima ,  Toshikatsu Kojima ,  Tomonari Takeuchi ,  Tetsuo Sakai ,  Takuhiro Miyuki ,  Junichi Niwa ,  Kazuhito Kawasumi

发明人： Akira Kojima ,  Toshikatsu Kojima ,  Tomonari Takeuchi ,  Tetsuo Sakai ,  Takuhiro Miyuki ,  Junichi Niwa ,  Kazuhito Kawasumi

IPC分类号： H01M4/36

CPC分类号： H01M4/364 ,  H01M2/043 ,  H01M4/0471 ,  H01M4/366 ,  H01M4/5825 ,  H01M2004/021

摘要： It is intended to provide a positive electrode active material, which contains a lithium silicate based compound and has superior conductivity, for nonaqueous electrolyte secondary battery, a process for producing the same, and a nonaqueous electrolyte secondary battery using the positive electrode active material. The lithium silicate based compound and a carbon material are mixed at 450 to 16000 rpm for 1 minute to 10 hours and then heated and pressurized at 500° C. to 700° C. at 1 to 500 MPa for 1 minute to 15 hours, thereby adhering the lithium silicate based compound and the carbon material to each other.

摘要翻译： 本发明提供一种正极活性物质，其含有硅酸锂系化合物，导电性优异，对于非水电解质二次电池，其制造方法以及使用该正极活性物质的非水电解质二次电池。 将硅酸锂基化合物和碳材料以450〜16000rpm混合1分钟〜10小时，然后在500℃加热至700℃，在1〜500MPa下加热1分钟〜15小时，由此 将硅酸锂基化合物和碳材料彼此粘合。

公开(公告)号：US20110315919A1

公开(公告)日：2011-12-29

申请号：US13255447

申请日：2010-03-04

申请人： Toshikatsu Kojima ,  Tetsuo Sakai ,  Takuhiro Miyuki ,  Akira Kojima ,  Junichi Niwa ,  Hitotoshi Murase

发明人： Toshikatsu Kojima ,  Tetsuo Sakai ,  Takuhiro Miyuki ,  Akira Kojima ,  Junichi Niwa ,  Hitotoshi Murase

IPC分类号： H01M4/04 ,  H01M4/525

CPC分类号： C01B35/128 ,  B82Y30/00 ,  C01P2002/72 ,  C01P2004/03 ,  C01P2004/64 ,  H01M4/136 ,  H01M4/5825 ,  H01M10/0525

摘要： A process is provided, process which makes it possible to produce lithium-borate-system materials by means of relatively simple means, lithium-borate-system materials which are useful as positive-electrode active materials for lithium-ion secondary battery, and the like, whose cyclic characteristics, capacities, and so forth, are improved, and which have better performance. The present production is characterized in that a divalent metallic compound including at least one member of compounds that is selected from the group consisting of divalent-iron compounds and divalent-manganese compounds, and boric acid as well as lithium hydroxide are reacted at 400-650° C. in a molten salt of a carbonate mixture comprising lithium carbonate and at least one member of alkali-metal carbonates that is selected from the group consisting of potassium carbonate, sodium carbonate, rubidium carbonate and cesium carbonate in a reducing atmosphere.

摘要翻译： 提供了一种方法，其可以通过相对简单的方法生产锂 - 硼酸盐体系材料，可用作锂离子二次电池的正极活性物质等的锂 - 硼酸盐体系材料 ，其循环特性，能力等得到改进，具有更好的性能。 本发明的特征在于，包含选自二价铁化合物和二价锰化合物的化合物中的至少一种的二价金属化合物以及硼酸以及氢氧化锂在400-650℃下反应 在包含碳酸锂的碳酸盐混合物和至少一种选自碳酸钾，碳酸钠，碳酸铷和碳酸铯中的至少一种碱金属碳酸盐成分的熔融盐中的还原气氛中。

公开(公告)号：US20110291055A1

公开(公告)日：2011-12-01

申请号：US13147747

申请日：2009-11-20

申请人： Toshikatsu Kojima ,  Tetsuo Sakai ,  Takuhiro Miyuki ,  Yasue Okumura ,  Akira Kojima ,  Junichi Niwa ,  Hitotoshi Murase

发明人： Toshikatsu Kojima ,  Tetsuo Sakai ,  Takuhiro Miyuki ,  Yasue Okumura ,  Akira Kojima ,  Junichi Niwa ,  Hitotoshi Murase

IPC分类号： H01M4/58 ,  H01B1/18

CPC分类号： H01M4/5825 ,  C01B33/32 ,  H01M10/052 ,  Y02E60/122 ,  Y02P70/54

摘要： The present invention is one which provides a production process for lithium-silicate-system compound, the production process being characterized in that: a lithium-silicate compound being expressed by Li2SiO3 is reacted with a substance including at least one member of transition-metal elements that is selected from the group consisting of iron and manganese at 400-650° C. in a molten salt of a carbonate mixture comprising lithium carbonate and at least one member of alkali-metal carbonates that is selected from the group consisting of potassium carbonate, sodium carbonate, rubidium carbonate and cesium carbonate in a mixed-gas atmosphere including carbon dioxide and a reducing gas; and a positive-electrode active material for lithium-ion secondary battery that comprises a lithium-silicate-system compound being obtained by the aforesaid process.In accordance with the present invention, it becomes feasible to produce lithium-silicate-system materials, which are useful as positive-electrode active materials for lithium-ion secondary battery, and the like, by means of relatively simple and easy means.

摘要翻译： 本发明是提供一种硅酸锂系化合物的制造方法，其制造方法的特征在于：将由Li 2 SiO 3表示的硅酸锂化合物与包含至少一种过渡金属元素的物质 选自铁和锰在400-650℃的碳酸盐混合物的熔融盐中的碳酸盐混合物，所述碳酸盐混合物包含碳酸锂和至少一种碱金属碳酸盐成员，所述碱金属碳酸盐选自碳酸钾， 碳酸钠，碳酸铷和碳酸铯在包括二氧化碳和还原气体的混合气体气氛中; 以及锂离子二次电池用正极活性物质，其包含通过上述方法得到的硅酸锂系化合物。 根据本发明，通过相对简单且容易的手段，可以生产用作锂离子二次电池的正极活性物质等的硅酸锂系材料。