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公开(公告)号：US20170324086A1
公开(公告)日：2017-11-09
申请号：US15526707
申请日：2015-11-12
发明人： Koji Nitta , Shoichiro Sakai , Atsushi Fukunaga , Eiko Imazaki , Koma Numata , Hideaki Ito , Hitoshi Kobayashi , Toshiaki Yamashita
IPC分类号： H01M4/38 , H01M10/0564
CPC分类号： H01M4/381 , H01G11/04 , H01G11/30 , H01G11/62 , H01G11/86 , H01M4/0459 , H01M4/134 , H01M4/1395 , H01M4/362 , H01M10/054 , H01M10/0564 , H01M10/0566 , Y02E60/13
摘要： Provided is a method for producing a negative electrode for an electric storage device, the method comprising the steps of preparing a negative electrode composition comprising a negative electrode active material that reversibly carries a sodium ion, metal sodium, and a liquid dispersion medium for dispersing them; allowing a negative electrode current collector to hold the negative electrode composition; evaporating at least part of the liquid dispersion medium from the negative electrode composition held by the negative electrode current collector, thereby giving a negative electrode precursor comprising the negative electrode active material, the metal sodium, and the negative electrode current collector; and bringing the negative electrode precursor into contact with an electrolyte having sodium ion conductivity, thereby doping the negative electrode active material with sodium eluted from the metal sodium.
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公开(公告)号：US10886531B2
公开(公告)日：2021-01-05
申请号：US15526707
申请日：2015-11-12
发明人： Koji Nitta , Shoichiro Sakai , Atsushi Fukunaga , Eiko Imazaki , Koma Numata , Hideaki Ito , Hitoshi Kobayashi , Toshiaki Yamashita , Shinichi Maruyama
IPC分类号： H01M4/00 , H01M4/38 , H01G11/62 , H01G11/30 , H01G11/86 , H01M10/054 , H01G11/04 , H01M4/04 , H01M4/36 , H01M4/134 , H01M10/0566 , H01M4/1395 , H01M10/0564
摘要： Provided is a method for producing a negative electrode for an electric storage device, the method comprising the steps of preparing a negative electrode composition comprising a negative electrode active material that reversibly carries a sodium ion, metal sodium, and a liquid dispersion medium for dispersing them; allowing a negative electrode current collector to hold the negative electrode composition; evaporating at least part of the liquid dispersion medium from the negative electrode composition held by the negative electrode current collector, thereby giving a negative electrode precursor comprising the negative electrode active material, the metal sodium, and the negative electrode current collector; and bringing the negative electrode precursor into contact with an electrolyte having sodium ion conductivity, thereby doping the negative electrode active material with sodium eluted from the metal sodium.
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公开(公告)号：US09352966B2
公开(公告)日：2016-05-31
申请号：US14352175
申请日：2012-09-25
发明人： Atsushi Fukunaga , Shinji Inazawa , Koji Nitta , Shoichiro Sakai
IPC分类号： C01B21/086 , C01D13/00
CPC分类号： C01B21/086 , C01D13/00
摘要： A mixture of sulphamic acid, a halogenated sulphonic acid and thionyl chloride is heated to allow the reaction to proceed, to thereby produce first intermediate products. The first intermediate products are then subjected to reaction with an alkali metal fluoride MF to produce second intermediate products. The second intermediate products is then subjected to reaction with the alkali metal fluoride MF in a polar solvent to obtain a desired product MN(SO2F)2 (where M is an alkali metal).
摘要翻译： 将氨基磺酸，卤代磺酸和亚硫酰氯的混合物加热以使反应进行，从而产生第一中间产物。 然后将第一中间产物与碱金属氟化物MF反应以产生第二中间产物。 然后将第二中间产物在极性溶剂中与碱金属氟化物MF反应，得到所需产物MN（SO2F）2（其中M为碱金属）。
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公开(公告)号：US20160079632A1
公开(公告)日：2016-03-17
申请号：US14784885
申请日：2014-03-03
发明人： Atsushi Fukunaga , Shinji Inazawa , Koji Nitta , Shoichiro Sakai , Eiko Imazaki , Koma Numata
IPC分类号： H01M10/39
CPC分类号： H01M10/399 , H01M10/054 , H01M10/0569 , H01M2300/0045 , H01M2300/0048
摘要： Provided are a molten-salt electrolyte having good charge-discharge cycle characteristics and a sodium molten-salt battery using the same. The molten-salt electrolyte contains an ionic liquid whose ultraviolet-visible absorption spectrum does not have an absorption peak attributable to impurities in a wavelength range of 200 to 500 nm, and a sodium salt. The sodium molten-salt battery includes a positive electrode that contains a positive electrode active material, a negative electrode that contains a negative electrode active material, and the molten-salt electrolyte. The ionic liquid is preferably a salt of an organic onium cation and a bis(sulfonyl)imide anion.
摘要翻译： 提供了具有良好的充放电循环特性的熔盐电解质和使用该熔融盐电解质的钠熔盐电池。 熔盐电解质含有其紫外可见吸收光谱不具有归属于200〜500nm波长范围的杂质的吸收峰的离子液体和钠盐。 钠熔融盐电池包括含有正极活性物质的正极，含有负极活性物质的负极和熔融盐电解质。 离子液体优选为有机鎓阳离子和双（磺酰基）酰亚胺阴离子的盐。
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5.发明申请公开(公告)号：US20170309958A1
公开(公告)日：2017-10-26
申请号：US15517456
申请日：2015-10-05
发明人： Shoichiro Sakai , Koji Nitta , Atsushi Fukunaga , Eiko Imazaki , Masahiro Aoki
IPC分类号： H01M10/0566 , H01M10/0561 , H01M4/36
CPC分类号： H01M10/0566 , H01M4/36 , H01M10/054 , H01M10/0561 , H01M10/0569
摘要： Provided are an electrolytic solution for sodium-ion secondary battery, the solution having sodium-ion conductivity, and including a sodium salt and a non-aqueous solvent, wherein the non-aqueous solvent includes a fluorophosphate ester and propylene carbonate, and a content of the fluorophosphate ester in the non-aqueous solvent is 5 to 50 mass %; and a sodium-ion secondary battery including the same.
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公开(公告)号：US09755240B2
公开(公告)日：2017-09-05
申请号：US14765164
申请日：2013-12-17
发明人： Shoichiro Sakai , Koma Numata , Eiko Imazaki , Atsushi Fukunaga , Koji Nitta , Shinji Inazawa
CPC分类号： H01M4/622 , H01M4/13 , H01M10/399 , H01M2300/0048 , H02J7/007
摘要： Provided is an electrode for a sodium molten-salt battery in which degradation of the electrode can be suppressed even when charging and discharging are repeated, and which has excellent cycle characteristics. The electrode for a sodium molten-salt battery includes a current collector and an electrode mixture adhering to a surface of the current collector, in which the electrode mixture includes an electrode active material and a binder containing a polymer, and the polymer does not contain a fluorine atom. The polymer can include, for example, at least one selected from the group consisting of polyamide resins and polyimide resins or at least one selected from the group consisting of acrylic resins, rubber-like polymers, and cellulose derivatives.
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7.发明申请公开(公告)号：US20160049694A1
公开(公告)日：2016-02-18
申请号：US14773665
申请日：2013-12-19
发明人： Atsushi Fukunaga , Shinji Inazawa , Koji Nitta , Shoichiro Sakai , Eiko Imazaki , Koma Numata
CPC分类号： H01M10/399 , H01M4/131 , H01M4/485 , H01M4/58 , H01M2004/028
摘要： A positive electrode active material for sodium molten salt batteries includes a sodium-containing metal oxide that can electrochemically intercalate and deintercalate sodium ions, wherein a ratio by mass of sodium carbonate is 500 ppm or less. A ratio by mass of sodium carbonate in the positive electrode active material is more preferably 100 ppm or less.
摘要翻译： 用于钠熔融盐电池的正极活性物质包括可以电化学插入和脱离钠离子的含钠金属氧化物，其中碳酸钠的质量比为500ppm以下。 正极活性物质中碳酸钠的质量比更优选为100ppm以下。
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公开(公告)号：US09711827B2
公开(公告)日：2017-07-18
申请号：US14891626
申请日：2014-03-07
发明人： Atsushi Fukunaga , Shinji Inazawa , Koji Nitta , Shoichiro Sakai , Eiko Imazaki , Koma Numata
IPC分类号： H01M10/39 , H01M10/054 , H01M10/0566 , H01M4/587 , H01M4/583
CPC分类号： H01M10/399 , H01M4/583 , H01M4/587 , H01M10/054 , H01M10/0566 , H01M2220/10 , H01M2220/20 , H01M2300/0022 , H01M2300/0045 , H01M2300/0048
摘要： Provided is a sodium molten-salt battery having good charge-discharge cycle characteristics. The sodium molten-salt battery includes a positive electrode that contains a positive electrode active material, a negative electrode that contains a negative electrode active material, and a molten-salt electrolyte that contains a sodium salt and an ionic liquid that dissolves the sodium salt. The negative electrode active material contains non-graphitizable carbon. The ionic liquid is a salt of a bis(sulfonyl)imide anion and a first onium cation that does not cause a Faradaic reaction with the non-graphitizable carbon. The molten-salt electrolyte contains a second onium cation in an amount of 1,000 ppm by mass or less. The second onium cation is represented by a general formula (1): R1R2R3R4N+ where R1 to R4 are each independently a hydrogen atom or a methyl group.
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公开(公告)号：US20170179537A1
公开(公告)日：2017-06-22
申请号：US15118377
申请日：2014-06-12
发明人： Shoichiro Sakai , Koji Nitta , Atsushi Fukunaga , Koma Numata , Eiko Imazaki
CPC分类号： H01M10/399 , H01M4/131 , H01M4/133 , H01M4/587 , H01M10/054 , H01M10/0568 , H01M2004/027 , H01M2300/0045 , H01M2300/0048
摘要： A sodium molten salt battery includes a positive electrode containing a positive electrode active material, a negative electrode containing a negative electrode active material, a separator provided between the positive electrode and the negative electrode, and a molten salt electrolyte having sodium ion conductivity, in which the negative electrode active material contains hard carbon and is pre-doped with sodium ions, and in which when the state of charge is 0%, the potential of the negative electrode is 0.7 V or less with respect to metallic sodium.
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10.发明申请LITHIUM ION SECONDARY BATTERY, CHARGE-DISCHARGE SYSTEM AND CHARGING METHOD 审中-公开锂离子二次电池，充电放电系统和充电方法公开(公告)号：US20160190642A1
公开(公告)日：2016-06-30
申请号：US14911553
申请日：2014-04-28
发明人： Atsushi Fukunaga , Koji Nitta , Shoichiro Sakai , Eiko lmazaki , Koma Numata
IPC分类号： H01M10/0566 , H01M4/133 , H01M4/525 , H01M4/587 , H01M4/62 , H02J7/00 , H01M4/80 , H01M10/0567 , H01M10/0525 , H01M10/42 , H01M10/44 , H01M4/131 , H01M4/66
CPC分类号： H01M10/0566 , H01M4/131 , H01M4/133 , H01M4/525 , H01M4/587 , H01M4/623 , H01M4/625 , H01M4/66 , H01M4/661 , H01M4/80 , H01M10/052 , H01M10/0525 , H01M10/0567 , H01M10/0568 , H01M10/0569 , H01M10/4257 , H01M10/44 , H01M10/443 , H01M2004/027 , H01M2004/028 , H01M2010/4271 , H01M2220/20 , H01M2300/0025 , H01M2300/0048 , H02J7/0047 , H02J7/007 , H02J7/047 , Y02T10/7011
摘要： A lithium ion secondary battery including a positive electrode, a negative electrode, a separator disposed between the positive electrode and the negative electrode, and a nonaqueous electrolyte, the positive electrode including a positive electrode current collector and a positive electrode active material held on the positive electrode current collector, the positive electrode active material including a lithium-containing transition metal oxide, the negative electrode including a negative electrode current collector and a negative electrode active material held on the negative electrode current collector, the negative electrode active material including at least one selected from the group consisting of lithium metal, lithium alloys, carbon materials, lithium-containing titanium compounds, silicon oxides, silicon alloys, zinc, zinc alloys, tin oxides and tin alloys, the nonaqueous electrolyte including a first salt formed between an organic cation and a first anion and a second salt formed between a lithium ion and a second anion.
摘要翻译： 一种锂离子二次电池，包括正极，负极，设置在正极和负极之间的隔板和非水电解质，所述正极包括正极集电体和保持在正极上的正极活性物质 所述正极活性物质含有含锂过渡金属氧化物，所述负极包含负极集电体和负极活性物质，所述负极活性物质保持在所述负极集电体上，所述负极活性物质至少包含一种 选自由锂金属，锂合金，碳材料，含锂钛化合物，氧化硅，硅合金，锌，锌合金，锡氧化物和锡合金组成的组，所述非水电解质包括在有机阳离子 和第一阴离子和第二盐 形成在锂离子和第二阴离子之间。
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