Hybrid Materials Based on COnducting Organic Polymers and Electroactive Inorganic Molecules and Oxides. Applciation As Lithium-Insertion Elelctrodes

摘要

The synthesis, spectroscopic and electrochemical characterization of a series of hybrid organic-inorganic materials are reported. The hybrids are formed by conducting organic polymers and electroactive inorgainc species. The latter can be either molecular anions or ectended oxide, leading to different host-guest combinations. We have carried out a systematic study ofthe synthesis of the hybrids and determined key parameters for the reporducibility fo the materials obtained. We have determined under what conditions the molecular species stay anchored inthe polymer contributing to the overall elctrochemical activity fo these materials and turning the polymers from anion-insertion electrodes into cation-insertion electrodes. In the PAni/V_2O_5 system we have established the existence of two phases corresponding to the intercalation of one and two monolayers of PAni into V_2O_5 and have carried out their electochemical characterization and their optimization as insertion cathodes in reversible lithium cells.