Electrode active material, electrode and electrical storage device

The invention provides an electrode active material which allows an electrical storage device such as a lithium ion capacitor or a lithium ion secondary battery to exhibit excellent low-temperature characteristics. The electrode active material includes a carbon material having a volume of macropores with 50 to 400 nm pore diameters of 0.05 to 0.40 cc/g. The carbon material may be a composite carbon material that contains a carbon material forming a core, and a coating carbon material covering at least part of the core-forming carbon material.