ВПЛИВ МОРФОЛОГІЇ ПОВЕРХНІ АЛЮМІНІЄВОГО СТРУМОВІДВОДУ НА АДГЕЗІЮ ЕЛЕКТРОДНОГО МАТЕРІАЛУ І ОПІР ЕЛЕКТРОХІМІЧНОГО КОНДЕНСАТОРА

Purpose. The adhesion of the active material to the current collector, as well as resistance of electrochemical capacitors was investigated in the paper. Methods. An adhesion was evaluated by peeling test, an resistance was measured using impedance technique. Findings. Different Al current collectors have been tested and compared in order to improve adhesion of the active material and contact resistance. Using the Al current collectors with different morphology and extended surface gave possibility to improve adhesion and to reduce the contact resistance between the active layer and Al foil. The current work describes also some new approaches for low-cost electrode fabrication process using the water-based binder system based on Styrene-Butadiene Rubber (SBR) and Carboxymethyl cellulose (CMC). Originality. A new environmentally friendly and low-cost method for manufacturing the electrodes of electrochemical capacitors has been proposed. The method has shown the possibilities to produce electrodes with a high adhesion of the active layer to the Al current collector of some morphology and also achieving the low contact resistance. Practical value. The results allow us to improve the electrical characteristics of electrochemical capacitors and the technology of its production. [ABSTRACT FROM AUTHOR]