<p>Disclosed is a coating liquid which contains: a polysaccharide; a polymer having a block isocyanate structure such as a polymer that contains a repeating unit derived from a monomer that has a block isocyanate structure and at least one polymerizable unsaturated group; a solvent; and a conductivity-imparting agent and/or an electrode active material. An undercoat layer or an electrode active material layer is formed by applying the coating liquid over a collector and drying the applied coating liquid thereon. A secondary battery such as a lithium ion battery or an electric double layer capacitor is fabricated using an electrode that comprises the undercoat layer or the electrode active material layer.</p>
