Annotation

Electrochemical power sources and, first of all, are batteries, one of the technologies dealing with the issues of the modern technosphere. Recently, there has been an increasing need for miniaturized, high-capacity and flexible batteries, which implies the presence of portable electronics, flexible electronics and miniaturization of automotive devices. In this regard, additive technologies for the manufacture of batteries and their cells, including the inkjet printing method, are actively developing. In addition to the possibility of manufacturing thin and flexible elements, their production is obtained.

To date, the inks used for printed electronics and batteries are mainly dispersions. The use of dispersison inks causes a number of difficulties due to insufficient sensitivity, exacerbation of rheology and other disorders. An alternative is the use of dissolved inks, devoid of disadvantages. The most suitable battery electrodes for solution printing are ionic conductive polymers and redox polymers. The presence of ionic groups ensures water solubility, conductive polymers provide electronic conductivity, redox polymers provide electrochemical capacity.

The project is devoted to the development of an approach to the manufacture of cathodes for batteries by inkjet printing using aqueous solutions of conductive and redox polymers. When sequentially printed with a cationic conductive polymer and an anionic redox polymer, an insoluble polyelectrolyte complex of these polymers will form, which will attain electronic conductivity from conductive polymer and electrochemical capacity from redox polymer. The relevance of this project is due to the need for thin and flexible batteries and batteries of a certain geometry. The task of simplifying the manufacturing technology of battery cells, including cathodes, is also relevant.

Within the framework of this project, it is planned to develop ink formulations based on cationic conductive polymers and anionic redox polymers suitable for inkjet printing, as well as a sample of electrodes obtained on a household inkjet printer. Printed electrodes obtained will be investigated by electrochemical methods.

The novelty of the project is due to the use of dissolved inks based on cationic conductive polymers and anionic redox polymers, as well as the formation of active material due to the formation of their polyelectrolyte complexes in the imprint. Until now, this approach has not been used for inkjet printing of electronics.

Eventually, this project will have a new approach to inkjet printing of cathodes for batteries with polyelectrolyte complexes of a cationic conductive polymer and an anionic redox polymer as active materials. Ink compositions, printing modes will be found, electrochemical and energy storage characteristics of the obtained electrodes will be studied.

Publications