| 摘要 |
PROBLEM TO BE SOLVED: To provide an electrode for a secondary battery, which can give a high capacity to the battery and can enhance flexibility of the battery. SOLUTION: This electrode is made up such that a current collector is coated with an electrode active material layer which is composed of an active material, flake graphite, and a binder. In this event, the central particle size of the graphite is caused to be larger than the central particle size of the active material, and the a following expression is satisfied, wherein r is a particle size of the active material, f(r) is particle size distribution of the active material, d is density of the active material, Sg is a specific surface area of the graphite according to the BET method, Ma is weight of the active material in the electrode coating film, and Mg is weight of the graphite. Expression: 9.Ma/d∫0 <∞> f(r)/ rdr<=Mg.Sg. |
