摘要:
The present disclosure relates to mesoporous silica particles, remarkable in that said mesoporous silica particles have a diameter size ranging between 50 nm and 150 nm as determined by transmission electron microscopy, wherein said mesoporous silica particles comprise an external surface with pores and an internal core comprising channels extending to said pores, the external surface being functionalized with a first type of functional group and the channels presenting a surface functionalized with a second type of functional group, the first type of functional group being different from the second type of functional group, wherein the pores have a diameter ranging between 5 nm and below 30 nm as determined by transmission electron microscopy and wherein said mesoporous silica particles show a dendrite morphology with dendrites evidenced by transmission electron microscopy.
摘要:
[Problem] To provide a method of producing a silicon hydride oxide-containing organic solvent (coating solution) with which a silicon hydride oxide coating film can be formed on a substrate. Using the silicon hydride oxide-containing organic solvent makes it unnecessary to place a coating solution in non-oxidizing atmosphere at the time of coating of the substrate or to perform heat treatment on the substrate after the coating because a silicon hydride oxide is formed in the coating solution before the coating. [Solution] A method of producing a silicon hydride oxide-containing organic solvent including: blowing an oxygen-containing gas on an organic solvent containing a silicon hydride or a polymer thereof. The silicon hydride is cyclic silane. The silicon hydride is cyclopentasilane. An oxide of the silicon hydride or the polymer thereof is contained at a proportion of (residual Si-H groups)/(Si-H groups before oxidation) = 1 to 40 mol%. The cyclic silane can be obtained by causing the cyclic silane to react with a hydrogen halide in cyclohexane in the presence of an aluminum halide, dissolving the obtained cyclic silane in an organic solvent and reducing it.
摘要:
A process for fabricating an optical device includes injecting (301) optical silicone into a mold cavity formed by two or more mutually matching mold-elements, curing (302) the optical silicone contained by the mold cavity, and separating (303) the mold-elements from the optical device constituted by the optical silicone. The reversible elasticity of the optical silicone after the curing phase is utilized in the process so that at least one of the mold-elements has counterdraft which causes a reversible deformation in the optical device when the mold-element is separated from the optical device. As the counterdraft is allowable, the shape of the optical device as well as the dividing joints between the mold-elements can be designed more freely. For example, walls of the mold cavity corresponding to optically active surfaces of the optical device can be arranged to be free from dividing joints between the mold-elements.
摘要:
[Problem] In the case where a silicon substance having a high theoretical capacity as a negative electrode active material for a lithium ion secondary battery is used as a negative electrode active material, such a negative electrode active material is provided that has a high initial battery capacity and suffers less deterioration in performance even when many cycles of charge and discharge are repeated. A lithium ion secondary battery using the negative electrode active material is provided. [Solution] Silicon and copper (2) oxide, or silicon, metallic copper and water are pulverized and simultaneously mixed in a pulverization device, thereby providing a negative electrode active material that has good cycle characteristics and a large battery capacity.
摘要:
The invention relates to a method for preparing SiO x nanofilament particles, in which x is 0.8 to 1.2. The method includes: a step of melting silica (SiO 2 ) and silicon (Si) at a temperature that is at least around 1410°C, leading to the production of gaseous silicon monoxide (SiO); and a step of condensing the gaseous SiO, thus obtaining the SiO x nanofilament particles. The method can also include the use of carbon.
摘要:
According to the present invention, there is provided a silicon oxide for a non-aqueous electrolyte secondary battery negative electrode material wherein the silicon oxide is a carbon-containing silicon oxide obtained by codeposition from a SiO gas and a carbon-containing gas, and the carbon-containing silicon oxide has a carbon content of 0.5 to 30%. As a result, it is possible to provide a silicon oxide which is capable of manufacturing a non-aqueous electrolyte secondary battery having excellent cycle characteristics and a high capacity in case of using as a negative electrode material, a method for manufacturing the same, and a lithium ion secondary battery and an electrochemical capacitor using the same.
摘要:
Provided are a silicon oxide-carbon composite and a method of manufacturing the same. More particularly, the present invention provides a method of manufacturing a silicon oxide-carbon composite including mixing silicon and silicon dioxide to be included in a reaction chamber, depressurizing a pressure of the reaction chamber to obtain a high degree of vacuum while increasing a temperature in the reaction chamber to a reaction temperature, reacting the mixture of silicon and silicon dioxide in a reducing atmosphere, and coating a surface of silicon oxide manufactured by the reaction with carbon, and a silicon oxide-carbon composite manufactured thereby.