. . "For example, with polar electrodes described in JP (Kokai) 11-154630, it is appropriate to use water glass, a cellulose derivative such as carboxymethylcellulose, or a thermoplastic resin such as polyvinyl alcohol in order to affix the collector and the electrode sheet (polarizable porous sheet) that constitute the electrode (specifically, the binder that constitutes the above conductive intermedi" . .