Abstract: The invention relates to electrical engineering and can find application for making electrodes for chemical sources of electric energy--using fibrous polymer metal-coating bases. The invention has for its object to replace palladium and tin used in operations preceding chemical coating of the polymer fibrous material with a metal, with less critical materials. The object is accomplished by using a cation-exchange material having a cation-exchange capacity of 0.5-6 mg-eq/g, and metal coating is preceded by saturating the polymer material with nickel ions, followed by treating it with an aqueous solution of boron hydride of an alkali metal.

Abstract: The present invention relates to electrical engineering and can find application for making devices accumulating electric energy.The invention has for its object to improve the electrical characteristics of double-layer capacitors. To this aim, use is made of a nickel-oxide electrode in pair with an electrode made of a fibrous carbonic material, as well as of an aqueous-alkaline or aqueous-carbonate electrolyte. To obtain a power capacity of the capacitor, the carbonic material one of the electrodes is made from is nickel-copper-plated.