| 摘要 |
PURPOSE:To prevent carbon particles from separating during preservation and application so as to provide an excellent adhesion property and stable electrical conductivity by allowing an organic resin and the carbon particles to meet respective predetermined requirements, and setting the amount of the organic resin to a predetermined wt.%. CONSTITUTION:A copolymer, wherein a unit capable of absorbing stresses caused by the expansion and contraction of electrodes due to a charge and discharge cycle and a heat cycle and a unit having a group that provides an adhesive property to the metal of a current collector are combined within molecules, is used as an organic resin binder, the amount of the organic binder being 1 to 10wt.%. Carbon particles having a specific pH range and covered at their surfaces with a water-soluble high polymer are used as conductive particles. A variety of batteries that use electrodes made of a conductive composition containing such an organic resin and carbon particles can keep a large discharge capacity without causing peeling of the electrodes from the current collector due to the charge and discharge cycle and the heat cycle. |
