An intermediate layer (161) is provided between a catalyst layer (112) and a solid polymer electrolyte membrane (114). The intermediate layer (161) includes a protonic acid group-containing aromatic polyether ketone and catalyst particles.

A secondary battery of a proton conductive polymer, wherein a positive electrode 2 and a negative electrode 4 are arranged facing to each other via a separator in an electrolytic solution and only a proton in a π conjugated polymer or a proton of a hydrox...

Electroconductive polymers of different kinds are doped with an anion which is the same as that derived from a single acid that occupies the most part of an electrolytic solution of a polymer battery. A cathode (2) and an anode (4) are manufactured from th...

The present invention provides a secondary battery and a capacitor which may provide an excellent high rate and cycle characteristic as well as sufficient electromotive force and capacity. The secondary battery and a capacitor have an active material of an...

A secondary battery comprises a pair of collectors made of a valve action metal, a pair of electrodes comprising a sulfuric acid aqueous solution, a separator and an outer can. Each collector is covered with an oxide film of a thickness of 1.7-10 nm. The o...

Powder of a polymer active material (1) exhibiting an electro-chemical oxidation-reduction reaction is mixed with powder of a conductivity assisting agent (2) to obtain a mixture. The mixture is molded by a thermal press into a unitary block. Thus, a cell ...