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    • 3. 发明申请
    • Composite particle for electrode and method for producing same, electrode and method for producing same, and electrochemical device and method for producing same
    • 电极用复合颗粒及其制造方法,电极及其制造方法,电化学装置及其制造方法
    • US20070003836A1
    • 2007-01-04
    • US10556567
    • 2004-05-14
    • Tadashi SuzukiMasato KuriharaSatoshi Maruyama
    • Tadashi SuzukiMasato KuriharaSatoshi Maruyama
    • H01M4/62B02B5/02
    • H01M4/02H01M4/04H01M4/621H01M4/624
    • Composite particles for an electrode of the invention are produced through a granulating step in which, a conductive additive and a binder are brought into a close contact with particles consisting of the electrode active material to integrate with each other. The granulating step preferably comprises a process for preparing a stock solution comprising the binder, the conductive additive and a solvent, a process for forming a fluidized bed by throwing particles of electrode active material into a fluidizing bathe and a process for bringing the particles of electrode active material and the particles of conductive additive into a close contact with the binder by spraying a stock solution into the fluidizing bathe, allowing the stock solution adhering to the particles of electrode active material and drying the same to remove the solvent from the adhered stock solution. Composite particles thus obtained are used as the constituent material for electrode, and further, the electrode is used as an anode and/or cathode of an electrochemical element; thereby, the internal resistance of electrode can be reduced satisfactorily and the power density of the electrochemical element can be increased satisfactorily.
    • 本发明的电极用复合颗粒通过造粒步骤制造,其中导电添加剂和粘合剂与由电极活性材料组成的颗粒紧密接触以使其彼此一体化。 制粒步骤优选包括制备包含粘合剂,导电添加剂和溶剂的原液的方法,通过将电极活性材料的颗粒投入流化浴中形成流化床的方法和使电极颗粒 活性物质和导电添加剂颗粒与粘合剂紧密接触,通过将液体溶液喷洒到流化浴中,使储备溶液粘附到电极活性材料颗粒上并将其干燥以从粘附的储备溶液中除去溶剂 。 这样得到的复合粒子被用作电极的构成材料,此外,该电极用作电化学元件的阳极和/或阴极; 从而能够令人满意地降低电极的内部电阻,能够令人满意地提高电化学元件的功率密度。