Method for preparing and using electroconductive polymer composites as positive electrode active materials to prepare secondary batteries

A method of preparing a positive electrode of a secondary battery, said method comprising the following steps:

• (a) dissolving 10-99 weight percent of a conjugated electroconductive polymer and 90-1 weight percent of a mixture of an ionic salt and an ionizable polymer in a common organic solvent, in which the mixture comprises 10-90 weight percent of said ionic salt and 90-10 weight percent of said ionizable polymer;
• (b) mixing the resulting solution to form a homogenous mixture;
• (c) casting the homogenous mixture on a metallic grid or plate of nickel, aluminum or platinum;
• and
• (d) removing the common organic solvent from said homogenous mixture so as to cause a film to be formed on the metallic grid or plate to form a positive electrode.

A method of preparing a positive electrode of a secondary battery, which comprises the following steps:

• dissolving 10-99 weight percent of a conjugated electroconductive polymer and 90-1 weight percent of a mixture of an ionic salt and an ionizable polymer in a common organic solvent, in which the mixture comprises 10-90 weight percent of said ionic salt and 90-10 weight percent of said ionizable polymer;
• mixing the resulting solution to form a homogenous mixture;
• casting the homogenous mixture on a flat substrate and removing the common organic solvent therefrom such that a film is formed;
• coating a nickel, aluminum or platinum metallic layer on one side of the film by vapor deposition or sputtering to form a positive electrode.