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    • 7. 发明申请
    • SILICON OXIDE AND NEGATIVE ELECTRODE MATERIAL FOR LITHIUM-ION SECONDARY BATTERY
    • 用于锂离子二次电池的氧化硅和负极电极材料
    • US20120085974A1
    • 2012-04-12
    • US13377249
    • 2010-04-21
    • Shingo Kizaki
    • Shingo Kizaki
    • H01B1/08C01B33/113
    • H01M4/485C01B33/113H01M4/134H01M10/0525Y02E60/122
    • A silicon oxide for use as a negative electrode active material of a lithium-ion secondary battery is characterized by: a g-value measured by an ESR spectrometer is in the range of not less than 2.0020 to not more than 2.0050; and given that A, B, and C are the area intensities of peaks near 420 cm−1, 490 cm−1 and 520 cm−1 respectively in a Raman spectrum measured by a Raman spectroscopy, A/B is not less than 0.5 and C/B is not more than 2. The lithium-ion secondary battery has excellent cycle characteristic and initial efficiency in addition to high capacity. The silicon oxide preferably has a spin density in the range of not less than 1×1017 spins/g to not more than 5×1019 spins/g. A negative electrode material for the lithium-ion secondary battery contains not less than 20% by mass of this silicon oxide as a negative electrode active material.
    • 用作锂离子二次电池的负极活性物质的氧化硅的特征在于:由ESR光谱仪测量的g值在不小于2.0020至不大于2.0050的范围内; 并且A,B和C分别是通过拉曼光谱测量的拉曼光谱中分别在420cm -1,490cm -1和520cm -1附近的峰的面积强度,A / B不小于0.5, C / B不大于2.锂离子二次电池具有优异的循环特性和初始效率以及高容量。 氧化硅优选具有在不小于1×1017自旋/ g至不大于5×1019自旋/ g的范围内的自旋密度。 作为负极活性物质,作为锂离子二次电池用负极材料,含有20质量%以上的氧化硅。
    • 9. 发明申请
    • Silicon Monoxide Vapor Deposition Material, Silicon Powder for Silicon Monoxide Raw Material, and Method for Producing Silicon Monoxide
    • 一氧化硅气相沉积材料,一氧化硅原料硅粉和一氧化硅生产方法
    • US20070259113A1
    • 2007-11-08
    • US11661392
    • 2005-08-09
    • Shingo KizakiKazuo Nishioka
    • Shingo KizakiKazuo Nishioka
    • C09D1/00C01B33/113C23C16/42
    • C01B33/113C23C14/10
    • A silicon monoxide or a silicon monoxide vapor deposition material is characterized in that a hydrogen gas content is not lower than 120 ppm, and a silicon monoxide vapor deposition material having its hydrogen gas content not lower than 150 ppm. A film deposition rate is increased when the silicon monoxide is deposited on a substrate so that a silicon monoxide deposited film can efficiently be formed. A sublimation rate can be increased in producing the silicon monoxide by setting the hydrogen gas content of the raw material silicon powders to 30 ppm or more and the silicon monoxide can efficiently be produced at low cost. The silicon monoxide producing method can be used for producing vapor deposition materials for packaging materials having transparency and barrier properties for foods, medical products, medicinal products, and the like or vapor deposition materials for lithium battery electrode materials having silicon monoxide deposited films.
    • 一氧化硅或一氧化硅气相沉积材料的特征在于氢气含量不低于120ppm,并且其氢气含量不低于150ppm的一氧化硅气相沉积材料。 当将一氧化硅沉积在基板上时,成膜速率增加,从而可以有效地形成一氧化硅沉积膜。 通过将原料硅粉末的氢气含量设定为30ppm以上,能够以低成本有效地制造一氧化硅,能够提高生成一氧化硅的升华速度。 一氧化硅的制造方法可以用于生产具有食品,医疗产品,药品等的透明性和阻隔性的包装材料的气相沉积材料或具有一氧化硅沉积膜的锂电池电极材料的气相沉积材料。
    • 10. 发明申请
    • Silicon Monoxide Powder For Secondary Battery and Method For Producing the Same
    • 二次电池一氧化碳粉及其制作方法
    • US20080135801A1
    • 2008-06-12
    • US11658641
    • 2005-05-27
    • Shingo KizakiKazuo Nishioka
    • Shingo KizakiKazuo Nishioka
    • H01M4/48
    • H01M4/485H01M4/0471H01M4/131H01M4/1395H01M4/405H01M4/463H01M4/505H01M4/525H01M10/052H01M2004/028
    • A silicon monoxide powder for secondary battery of the present invention is characterized in that the silicon monoxide powder for secondary battery is used in a negative-electrode material of a lithium secondary battery and a hydrogen gas content is not less than 80 ppm. In the silicon monoxide powder for secondary battery, a discharge capacity and a cycle capacity durability rate can dramatically be improved, and miniaturization and cost reduction of the lithium secondary battery can be achieved. In a method for producing the silicon monoxide powder for secondary battery of the present invention, a silicon dioxide powder and a silicon powder with a hydrogen gas content of not less than 30 ppm are mixed together, heated to temperatures of 1250° C. to 1350° C. to vaporize a silicon monoxide, wherein the silicon monoxide thus vaporized is deposited on a deposition substrate to be subsequently crushed. Therefore, the silicon monoxide powder can efficiently be produced to largely reduce production costs such as electric power cost, thus enabling the present invention to be widely applied to the silicon monoxide powder for secondary battery.
    • 本发明的二次电池用一氧化硅粉末的特征在于,二次电池用一氧化硅粉末用于锂二次电池的负极材料,氢气含量不小于80ppm。 在二次电池用一氧化硅粉末中,能够显着提高放电容量和循环容量耐久性,能够实现锂二次电池的小型化和成本降低。 在本发明的二次电池用一氧化硅粉末的制造方法中,将二氧化硅粉末和氢气含量不小于30ppm的硅粉末混合在一起,加热至1250℃至1350℃ 以蒸发一氧化硅,其中由此蒸发的一氧化硅沉积在沉积基底上以随后被压碎。 因此,可以有效地制造一氧化硅粉末,从而大大降低电力成本等生产成本,从而能够将本发明广泛应用于二次电池用一氧化硅粉末。