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    • 9. 发明专利
    • Electrode for electrochemical element, and manufacturing method thereof
    • 电化学元件用电极及其制造方法
    • JP2012015297A
    • 2012-01-19
    • JP2010149929
    • 2010-06-30
    • Dynic CorpAtsushi Nishinoダイニック株式会社西野 敦
    • NISHINO ATSUSHIYAMAGUCHI MASAHIKOUCHIBORI TERUOSUNAGO ISATO
    • H01M4/02H01G11/02H01G11/22H01G11/24H01G11/26H01G11/28H01G11/32H01G11/38H01G11/42H01G11/86H01M4/04H01M4/13H01M4/139H01M4/62
    • Y02P70/54
    • PROBLEM TO BE SOLVED: To provide an electrode for an electrochemical element that has low resistance and has excellent withstand voltage characteristics.SOLUTION: The electrode for an electrochemical element comprises a current collector, a conductive layer formed on a surface of the current collector and including conductive carbon particles and a first binder, and an active material layer formed on a surface of the conductive layer and including active material particles and a second binder. The conductive carbon particles include a small-particle group and a large-particle group. The volume particle size distribution of the small-particle group has a peak in 3-7 μm range, the volume particle size distribution of the large-particle group has a peak in 10-20 μm range, and the weight ratio of the small-particle group to the large-particle group (small-particle group/large-particle group) is 95/5-50/50. An interface between the conductive layer and the active material layer has a roughness with a maximum height Rmax of 10 μm or more.
    • 要解决的问题:提供具有低电阻并且具有优异的耐电压特性的电化学元件用电极。 解决方案:用于电化学元件的电极包括集电器,形成在集电器的表面上并包括导电碳颗粒和第一粘合剂的导电层,以及形成在导电层的表面上的活性材料层 并且包括活性物质颗粒和第二粘合剂。 导电性碳粒子包括小粒子群和大粒子群。 小粒子群的体积粒径分布具有3-7μm范围的峰值,大粒子群的体积粒径分布在10〜20μm的范围内具有峰值,小粒子群的重量比, 大粒子群(小粒子群/大粒子群)的粒子群为95 / 5-50 / 50。 导电层和活性物质层之间的界面具有最大高度Rmax为10μm以上的粗糙度。 版权所有(C)2012,JPO&INPIT