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    • 37. 发明授权
    • Spherical organic polymer-silicon compound composite particles, hollow particles and their production methods
    • 球形有机聚合物 - 硅复合复合颗粒,中空颗粒及其制备方法
    • US08435475B2
    • 2013-05-07
    • US13412790
    • 2012-03-06
    • Takashi KawasakiMotoharu FukazawaIsao Sugimoto
    • Takashi KawasakiMotoharu FukazawaIsao Sugimoto
    • C01B33/12C04B16/08C08K7/22
    • C01B33/02Y10T428/2993
    • The present invention is to provide hollow particles with a low degree of agglomeration and having a high roundness, and a process for producing them.Hollow particles comprising a silicon compound, having an average particle size of from 5 to 65 nm and an average roundness of at least 0.90, and having a shell comprising the silicon compound and having a thickness of from 1 to 20 nm. Further, a method for producing hollow particles, which comprises adding sulfuric acid to a liquid containing spherical organic polymer-silicon compound composite particles having a core comprising an organic polymer and a shell comprising a silicon compound in a medium containing at least 95 mass % of water, followed by heating to carbonize the organic polymer thereby to convert it to a carbide, and subjecting the carbide to decomposition using a liquid oxidizing agent other than sulfuric acid.
    • 本发明提供具有低聚集度和高圆度的中空颗粒及其制备方法。 包含平均粒度为5〜65nm,平均圆度为0.90以上的硅化合物的中空粒子,具有硅化合物的外壳,厚度为1〜20nm。 另外,制造中空粒子的方法包括在含有球状有机聚合物 - 硅化合物复合颗粒的液体中加入硫酸,所述球形有机聚合物 - 硅化合物复合颗粒在含有至少95质量% 水,然后加热以碳化有机聚合物,从而将其转化为碳化物,并且使用硫酸以外的液体氧化剂对碳化物进行分解。
    • 38. 发明申请
    • ELECTRODE MATERIAL FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY
    • 用于锂二次电池和锂二次电池的电极材料
    • US20120328923A1
    • 2012-12-27
    • US13574996
    • 2011-07-07
    • Takehiko SawaiShinji SaitoKazunori UraoTakashi Kawasaki
    • Takehiko SawaiShinji SaitoKazunori UraoTakashi Kawasaki
    • H01M4/583H01M4/00B82Y30/00
    • H01M4/483H01M4/13H01M4/131H01M4/133H01M4/134H01M4/139H01M4/1391H01M4/1393H01M4/1395H01M4/36H01M4/366H01M4/38H01M4/386H01M4/387H01M4/48H01M4/5825H01M4/583H01M4/587H01M4/625H01M10/052Y02E60/122
    • The present invention provides a negative-electrode material for a lithium secondary battery which has a very low resistance, allows the lithium secondary battery to be charged and discharged (high output) at a high current and have a high capacity, and achieve a cycle life to such an extent that the lithium secondary battery can be mounted on a vehicle. The electrode material is composed of (a) at least one active substance (4) selected from among a metal oxide containing metal therein and an alloy material each of which is coated with a carbon material and has a graphene phase or an amorphous phase (8) on at least a surface thereof, (b) a graphite-based carbon material (5) having the graphene phase or the amorphous phase on at least a surface thereof; and (c) carbon material (6) other than the graphite-based carbon material and having the graphene phase or the amorphous phase on at least a surface thereof. The active substance (4), the graphite-based carbon material (5), and the carbon material (6) other than the graphite-based carbon material fuse the graphene phase or the amorphous phase (8a, 8b) thereof together and bond them to each other to form a composite active substance (7) including composed of the active substance including one active substance selected from among the metal oxide containing the metal and the alloy material.
    • 本发明提供了一种具有非常低电阻的锂二次电池用负极材料,使锂二次电池以高电流充放电(高输出)并具有高容量,并实现循环寿命 达到能够将锂二次电池安装在车辆上的程度。 电极材料由(a)至少一种选自含金属氧化物的活性物质(4)和各自涂覆有碳材料并具有石墨烯相或非晶相的合金材料(8 ),(b)至少在其表面上具有石墨烯相或非晶相的石墨基碳材料(5); 和(c)除了石墨基碳材料之外的碳材料(6),并且在至少其表面上具有石墨烯相或非晶相。 活性物质(4),石墨基碳材料(5)和除了石墨基碳材料之外的碳材料(6)将石墨烯相或非晶相(8a,8b)熔合在一起并将它们结合 彼此形成复合活性物质(7),该复合活性物质(7)由包含选自含有金属的金属氧化物和合金材料的一种活性物质的活性物质构成。