Polymer secondary battery and method of making same

A polymer secondary battery using, for at least one of the active material of positive electrode and the active material of negative electrode, a polymer-carbon composite material comprising powdered carbon having its surfaces coated with an organic compound polymer capable of adsorbing and desorbing protons electrochemically when the battery is being operated.

• wherein said organic compound polymer is a polymer selected from among polymers of quinones.

A polymer secondary battery using, for at least one of the active material of positive electrode and the active material of negative electrode, a polymer-carbon composite material comprising powdered carbon having its surfaces coated with an organic compound polymer capable of adsorbing and desorbing protons electrochemically when the battery is being operated,

• wherein said polymer battery further comprises a proton-containing electrolyte selected from the group consisting of an aqueous solution, a nonaqueous solution, a solid electrolyte and a gel electrolyte.

A method of making a polymer secondary batter which comprises the steps of providing a polymer-carbon composite material obtained by chemically polymerizing, in the presence of powdered carbon, a monomer yielding an organic compound polymer capable of adsorbing and desorbing protons electrochemically during operation of the battery, and removing the solvent from the resulting polymerization product;

• and fabricating at least one of the positive and negative electrodes by forming a layer of said polymer-carbon composite material on a current collector.