| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a negative electrode film for lithium-ion capacitor, which is suitably used for a capacitor with high output density by increased energy density per unit volume and reduction of internal resistance, the capacitor responding to power use for an automobile, a crane or the like; and to provide an electrode film-forming coating material composition. <P>SOLUTION: The negative electrode film for lithium-ion capacitor is obtained by applying, onto a metal foil, an electrode film-forming coating material composition containing graphite, a conductive aid and a binder in an aqueous medium containing a dispersant, and by heating and drying the coating material composition to coat the metal foil. The conductive aid is composed of at least any one of Ketjen black, acetylene black and graphite. The particle size distribution of component particles in the negative electrode film is composed of D<SB>10</SB>particle size of 0.3 μm or more, D<SB>50</SB>particle size of 0.5-15 μm, and D<SB>90</SB>particle size of 30 μm or less. The specific surface area of the negative electrode film ranges from 7 to 75 m<SP>2</SP>/g, and the surface roughness of the negative electrode film ranges from 0.1 to 1.5 μm. <P>COPYRIGHT: (C)2010,JPO&INPIT |
