Redox polymer electrodes for advanced batteries
AssigneeMidwest Research Institute
InventorsBrian A. Gregg, A. Michael Taylor
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Abstract
Advanced batteries having a long cycle lifetime are provided. More specifically, the present invention relates to electrodes made from redox polymer films and batteries in which either the positive electrode, the negative electrode, or both, comprise redox polymers. Suitable redox polymers for this purpose include pyridyl or polypyridyl complexes of transition metals like iron, ruthenium, osmium, chromium, tungsten and nickel; porphyrins (either free base or metallo derivatives); phthalocyanines (either free base or metallo derivatives); metal complexes of cyclams, such as tetraazacyclotetradecane; metal complexes of crown ethers and metallocenes such as ferrocene, cobaltocene and ruthenocene.
Claims12
A secondary cell comprising two electrode means, and an electrolyte, wherein at least one of said electrode means comprises a redox polymer material, wherein the redox polymer material changes oxidation state to transfer charge and is selected from the group consisting of:
- pyridyl or polypyridyl complexes of iron, ruthenium, osmium, chromium, tungsten, or nickel;
- tetra (4-aminophenyl) porphyrin and poly(ethyleneglycol)diglycidylether;
- iron tetra (4-aminophenyl)porphyrin and poly(ethyleneglycol)diglycidylether;
- and epoxy polymer of iron tetra (4-aminophenyl)porphorin;
- tetra (4-aminophenyl)porphyrin;
- metal complexes of cyclams, metal complexes of crown ethers and metallocenes.
A secondary cell comprising two electrode means, and an electrolyte, wherein at least one of said electrode means comprises a redox polymer material, wherein the redox polymer material is made from a mixture of polymerizable monomers containing one, two or three vinyl groups.
Dependencies are inferred from the claim text.