IONIC LIQUID-CONTAINING ELECTRODE MEMBRANE AND ELECTRODE, PROCESS FOR PRODUCING THE ELECTRODE MEMBRANE AND THE ELECTRODE, AND ELECTRIC STORAGE DEVICE

摘要

The electrode film of the present invention includes electrode material particles having an average particle diameter of Da, solid particles having an average particle diameter of Db, and an ionic liquid, wherein Da and Db satisfy a formula Db/Da ‰¤ 1.0 × 10 -1 . This electrode film is fabricated into an electrode in which the electrode film is stacked on a current collector. The electrode film is produced by a method including a step of dispersing electrode material particles having an average particle diameter of Da, solid particles having an average particle diameter of Db, and an ionic liquid in a liquid medium to obtain a dispersion liquid, a step of applying the dispersion liquid onto a support to form a dispersion liquid film, a step of removing the liquid medium from the dispersion liquid film to form an electrode film on the support, and a step of removing the support to isolate the electrode film. If a current collector is used as the support, an electrode is produced. This electrode can be incorporated in an electric energy storage device.