▎ 摘　　要

NOVELTY - An electrode (26) comprises a laminate of a pi -electron conjugated compound film (23) and a conductive film (22) which contains particles of a layered material containing one or several layers (l1). The layers (l1) contain a layer metal-based component (I), and a modifier or terminal (T) existing on a surface of the layer metal-based component, where (T) is at least one selected from a hydroxyl group, a fluorine atom, a chlorine atom, an oxygen atom, and a hydrogen atom. The pi -electron conjugated compound film contains a pi -electron conjugated compound containing at least one selected from an aromatic ring, a heteroaromatic ring, a carbon-carbon double bond, a carbon-carbon triple bond, and a carbon-phosphorus double bond. USE - Electrode used as biosignal sensing electrode (claimed) for measuring electroencephalogram, electrocardiogram, electromyogram, and electrical impedance tomography, and used as capacitor electrode, battery electrode, sensor electrode such as gas sensor, biosensor and chemical sensor, antenna electrode. ADVANTAGE - The electrode is capable of maintaining excellent electrode characteristics such as high conductivity for a long period of time. DETAILED DESCRIPTION - An electrode (26) comprises a laminate of a pi -electron conjugated compound film (23) and a conductive film (22) which contains particles (p1) of a layered material containing one or several layers (l1). The layers (l1) contain a layer metal-based component of formula (I): MmXn, where M is at least one metal of Group 3, 4, 5, 6, or 7, X is a carbon atom, a nitrogen atom, or their combination, n is 1-4, and m is less than 5 which is more than the value of n, and a modifier or terminal (T) existing on a surface of the layer metal-based component, where (T) is at least one selected from a hydroxyl group, a fluorine atom, a chlorine atom, an oxygen atom, and a hydrogen atom. The pi -electron conjugated compound film contains a pi -electron conjugated compound containing at least one selected from an aromatic ring, a heteroaromatic ring, a carbon-carbon double bond, a carbon-carbon triple bond, and a carbon-phosphorus double bond. An INDEPENDENT CLAIM is included for manufacture of the electrode, which involves (i) preparing a precursor (I) of a conductive film, (ii) removing at least a portion of atoms from the precursor by using an etching liquid, (iii) washing a intermediate (i1) obtained in the step (ii) with water, (iv) performing an intercalation comprising mixing a intermediate (i2) obtained in the step (iii) with a compound for inter-layer insertion of the intermediate (i2), (v) stirring a intermediate (i3) obtained in the step (iv) in a liquid, (vi) washing a intermediate (i4) obtained in the step (v) with water to obtain particles of a layered material, (vii) forming a conductive film comprising the particles of the layered material on a substrate, and (viii) forming pi -electron conjugated compound film on the conductive film. DESCRIPTION OF DRAWING(S) - The drawing shows a cross-sectional view of action and effect of the electrode. 21Substrate 22Conductive film 23Pi-electron conjugated compound film 25Biological tissue 26Electrode