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    • 3. 发明授权
    • Electrode for secondary battery and production process for the same and secondary battery
    • 二次电池用电极及相同二次电池的生产工艺
    • US09537150B2
    • 2017-01-03
    • US12597513
    • 2008-04-24
    • Tsuyoshi YanoTetsuhiro IshikawaShinji SaitoTakehiko Sawai
    • Tsuyoshi YanoTetsuhiro IshikawaShinji SaitoTakehiko Sawai
    • H01M4/62H01M4/88H01M4/13H01M4/139H01M4/02H01M10/052
    • H01M4/625H01M4/02H01M4/13H01M4/139H01M10/052Y02E60/122Y02P70/54
    • To provide an electrode for secondary battery, electrode which can materialize secondary batteries that are adapted into producing high output and additionally whose durability is high.It is characterized in possessing an electrode material that has an active-material powder 11, a conductive material 12 being formed of a carbonaceous material, and being adhered to a surface of said active-material powder 11, and fibrous conductive materials 13 being bonded to said conductive material 12. First of all, it becomes feasible to maintain the electric connection between the active-material powder and the conductive material stably by adhering the conductive material to a surface of the active-material powder. Further, the fibrous conductive materials are bonded to the conductive material that is adhered to a surface of the active-material powder. It is feasible to maintain the electric connection by getting the fibrous conductive materials entangled to each other. That is, it is feasible to keep the electric connection even when strains occur in the electrode material, because the fibrous conductive materials absorb the strains to keep the mutual contacts; even if large strains occur, it is possible to maintain the electric connection, because it is not disconnected compared with that in conventional conductive materials.
    • 其特征在于具有电极材料,其具有活性物质粉末11,由碳质材料形成的导电材料12,并且粘附到所述活性物质粉末11的表面,并且将纤维状导电材料13接合到 所述导电材料12.首先,通过将导电材料粘附到活性材料粉末的表面上,可以稳定地保持活性材料粉末和导电材料之间的电连接。 此外,纤维状导电材料与粘附到活性物质粉末的表面的导电材料接合。 通过使纤维状导电材料彼此缠结来维持电连接是可行的。 也就是说,即使当电极材料发生应变时,也可以保持电连接,因为纤维状导电材料吸收应变以保持相互接触; 即使发生大的应变,也可以保持电连接,因为与常规的导电材料相比并不断开。