摘要:
A high-purity silicon monoxide vapor deposition material which, in the formation of a film by vapor deposition, is effective in inhibiting splashing, and which has an average bulk density of 2.0 g/cml and a Vickers hardness of 500 or higher; a process for producing a high-purity silicon monoxide vapor deposition material consisting of SiO and metal impurities as the remainder, the total amount of the impurities being, 50 ppm or smaller, which comprises conducting a degassing, treatment in a raw-material chamber at a temperature lower than the sublimation temperature of silicon monoxide, raising the temperature to sublimate silicon monoxide, and depositing the silicon monoxide on a substrate in a deposition chamber. and a raw material for the silicon monoxide vapor deposition material which comprises silicon metal particles and silicon dioxide particles, the average particle size of each particulate material being I to 40 μm and/or the two particulate
摘要翻译:通过气相沉积形成膜的高纯度一氧化硅气相沉积材料有效地防止飞溅,平均堆积密度为2.0g / cm 3,维氏硬度为500或更高; 制备由SiO和金属杂质构成的高纯度一氧化硅气相沉积材料作为其余部分的方法,所述杂质的总量为50ppm以下,其包括在原料室中进行脱气处理 温度低于一氧化硅的升华温度,升高温度以升温一氧化硅,并将一氧化硅沉积在沉积室中的基板上。 以及包含硅金属颗粒和二氧化硅颗粒的一氧化硅气相沉积材料的原料,每个颗粒材料的平均粒度为I至40μm和/或两个颗粒
摘要:
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.
摘要:
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.
摘要:
A silicon monoxide vapor deposition material is characterized in that a hydrogen gas content therein is not more than 50 ppm, and splash generation can be suppressed when the silicon monoxide is deposited on a substrate base. A silicon monoxide vapor-deposited film having the excellent transparency and barrier properties can be formed. The silicon monoxide vapor deposition material whose hydrogen gas content is not more than 50 ppm can be formed at low costs by performing a degassing process for lowering the hydrogen gas content of a silicon powder as a raw material for the silicon monoxide vapor deposition material to 10 ppm or less. Therefore, the method for producing the silicon monoxide vapor deposition of the present invention can be applied as the method for producing the vapor deposition materials for the packaging materials having the transparency and barrier properties for foods, medical products, medicinal products, and the like.
摘要:
Provided is a negative electrode active material for a lithium-ion secondary battery, comprising SiOx that has an intensity ratio A1/A2 of 0.1 or less in spectra measured by a Fourier transform infrared spectrometer after subjecting the SiOx to evacuation treatment at 200° C., given that A1 designates an intensity of a silanol group-derived peak which appears around 3400 to 3800 cm−1, and A2 designates an intensity of a siloxane bond-derived peak which appears around 1000 to 1200 cm−1. It is preferred that x in the SiOx satisfies x
摘要:
Provided is a negative electrode material powder for a lithium ion secondary battery, including SiOx (0.4≦x≦1.2), in which 1H is inevitably included therein and a peak area of a chemical shift of 0.2-0.4 ppm is between 5% and 40% of an entire peak area in a spectrum 1H measured by means of nuclear magnetic resonance spectroscopy. A peak area of a chemical shift of 1.1-2.0 ppm is preferably between 5% and 95% of the entire peak area in a spectrum for 1H measured by means of nuclear magnetic resonance spectroscopyAs a result, there can be provided a negative electrode material powder for a lithium ion secondary battery used in a lithium ion secondary battery having a large discharge capacity, satisfactory initial efficiency, and cycle characteristics.
摘要翻译:本发明提供一种锂离子二次电池用负极材料粉末,其包含SiO x(0.4 @ x @ 1.2),其中不可避免地包含1H,化学位移的峰面积为0.2-0.4ppm为5%〜40% 通过核磁共振光谱测量的光谱1H中的整个峰面积的%。 1.1-2.0ppm的化学位移的峰面积优选在通过核磁共振波谱测量的1H的光谱中的整个峰面积的5%至95%之间。结果,可以提供负极材料 用于具有大放电容量,令人满意的初始效率和循环特性的锂离子二次电池中使用的锂离子二次电池用粉末。
摘要:
A negative electrode material powder for a lithium ion secondary battery having a conductive carbon film on the surface of a lower-silicon-oxide powder; wherein a specific surface area in BET measurement ranges from more than 0.3 m2/g to 40 m2/g, and no SiC peak appears at 2θ=35.6°±0.01° or the half-value width of the appeared peak is 2° or more in XRD measurement using CuKα rays. The proportion of said carbon film preferably ranges from 0.2% to 2.5% by mass. Said powder preferably has 100000 Ωcm or less of specific resistance. In XRD, P2/P1
摘要:
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.
摘要:
Provided is a negative-electrode material powder used for a lithium-ion secondary battery having a large discharge capacity and sufficient cycle characteristics as being durable in use. The powder for the battery includes a conductive carbon film on a lower silicon oxide powder, surface and satisfies requirements that: Si in SiC is 15.1 wt % or less in content, or A3 (=A2−A1) is 15.1 or less, given A1 (wt %): Si content measured by acid solution process, and A2 (wt %): Si content measured by alkali solution process; and a specific resistance is 30,000 Ωcm or less. In the lower silicon oxide powder, a maximum value P1 of SiOx-derived halos appearing at 2θ=10° to 30° and a value P2 of the strongest line peak of Si (111) appearing at 2θ=28.4±0.3°, in XRD using CuKα beam, preferably satisfy P2/P1
摘要:
A silicon oxide in the form of powder is represented by SiOx, wherein, when the silicon oxide is measured by use of an X-ray diffractometer comprising a sealed tube light source as a light source and a high speed detector as a detector, a halo is detected at 20°≦2θ≦40°, and a peak is detected at the highest quartz line position therein. The height P1 of the halo and the height P2 of the peak at the highest quartz line position satisfy P2/P1≦0.05. This silicon oxide is used as the negative electrode active material, whereby a lithium-ion secondary battery having stable initial efficiency and cycle characteristic can be obtained. The x of the SiOx is preferably 0.7