title: Renewable cathode materials from biopolymer/conjugated polymer interpenetrating networks.
abstract: Renewable and cheap materials in electrodes could meet the need for low-cost, intermittent electrical energy storage in a renewable energy system if sufficient charge density is obtained. Brown liquor, the waste product from paper processing, contains lignin derivatives. Polymer cathodes can be prepared by electrochemical oxidation of pyrrole to polypyrrole in solutions of lignin derivatives. The quinone group in lignin is used for electron and proton storage and exchange during redox cycling, thus combining charge storage in lignin and polypyrrole in an interpenetrating polypyrrole/lignin composite.
authors.affiliation: Institute of Chemistry and Technical Electrochemistry, Poznan University of Technology, Poznan, Poland.
authors.forename: Grzegorz
authors.initials: G
authors.lastname: Milczarek
authors.forename: Olle
authors.initials: O
authors.lastname: Inganäs
mesh_terms: D025802:Electric Capacitance; D055664:Electrochemical Techniques; D004566:Electrodes; D006863:Hydrogen-Ion Concentration; D007474:Ion Exchange; D008031:Lignin / Q000031:analogs & derivatives* / Q000737:chemistry; D010084:Oxidation-Reduction; D011108:Polymers / Q000737:chemistry*; D011758:Pyrroles / Q000737:chemistry*; D059205:Renewable Energy
chemical_list: D011108:Polymers; D011758:Pyrroles; C067635:polypyrrole; C001545:lignosulfuric acid; D008031:Lignin