ELECTRODE MATERIAL AND SECONDARY POWER SUPPLY USING IT

摘要

PROBLEM TO BE SOLVED: To provide an electrode having an excellent self-discharge characteristic even when an active material containing plenty of fine powder produced by crushing; and to provide a capacitor or a nonaqueous secondary battery having an excellent self-discharge characteristic even when a separator having a small thickness and small air permeability is used.

SOLUTION: This electrode for a capacitor or a nonaqueous secondary battery is formed by using active material powder and a binder. In the battery, the grain size distribution D50% of the active material is over 2 μm and the grain size distribution D10% of the active material is less than 1.5 μm. The electrode contains a polyamidoimide resin as the binder. The electrode is used for a positive electrode and/or a negative electrode.

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