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    • 3. 发明申请
    • Electrode Active Material, Electrode, And Electricity Storage Device
    • 电极活性材料,电极和蓄电装置
    • US20120121981A1
    • 2012-05-17
    • US13387231
    • 2010-07-29
    • Yukinari HarimotoHiroshi FukuiTakakazu HinoHisashi Osuka
    • Yukinari HarimotoHiroshi FukuiTakakazu HinoHisashi Osuka
    • H01M4/60H01B1/04
    • H01G11/30H01G11/32H01G11/48H01M2/0222H01M4/133H01M4/134H01M4/386H01M4/587H01M4/602H01M10/052Y02E60/13
    • This invention relates to an electrode active material, an electrode containing the active material, and an electricity storage device including the electrode. The electrode active material comprises a silicon-containing carbon-based composite material obtained by preparing a uniform phase comprising at least (A) a crosslinkable composition that includes a silicon-containing compound having a crosslinkable group, and (B) a liquid or melt that does not participate in the crosslinking reaction of the crosslinkable composition; then crosslinking the component (A), causing phase-separation from the component (B) for obtaining silicon-containing crosslinked particles or a dispersion wherein the silicon-containing crosslinked particles are dispersed in the component (B); and then baking the silicon-containing crosslinked particles or the dispersion in an inert gas or in a vacuum at 300 to 1,500° C. The electrode active material is particularly suitable as an electrode of a lithium secondary battery, displays high reversible capacity and stable charge and discharge cycle characteristics, and is characterized by having little electrical potential loss when lithium is discharged.
    • 本发明涉及电极活性物质,含有活性物质的电极以及包含该电极的蓄电装置。 电极活性材料包括通过制备均匀相而获得的含硅碳基复合材料,该均匀相至少包含(A)包含具有可交联基团的含硅化合物的可交联组合物,和(B)液体或熔体, 不参与可交联组合物的交联反应; 然后将组分(A)交联,引起组分(B)的相分离以获得含硅交联颗粒或其中含硅交联颗粒分散在组分(B)中的分散体; 然后将该含硅交联颗粒或该分散体在惰性气体中或在300至1500℃的真空中烘烤。电极活性材料特别适合作为锂二次电池的电极,显示出高可逆容量和稳定的电荷 和放电循环特性,其特征在于当放电时电位损失小。