Advanced Electrode Coatings Based on Poly-N-Phenylanthranilic Acid Composites with Reduced Graphene Oxide for Supercapacitors

Sveta Zhiraslanovna Ozkan; Lyudmila Ivanovna Tkachenko; Oleg Nikolaevich Efimov; Galina Petrovna Karpacheva; Galina Vasilevna Nikolaeva; Aleksandr Ivanovich Kostev; Nadejda Nikolaevna Dremova; Evgeny Nikolaevich Kabachkov

doi:10.3390/polym15081896

Advanced Electrode Coatings Based on Poly-N-Phenylanthranilic Acid Composites with Reduced Graphene Oxide for Supercapacitors

Polymers (Basel). 2023 Apr 15;15(8):1896. doi: 10.3390/polym15081896.

Authors

Sveta Zhiraslanovna Ozkan¹, Lyudmila Ivanovna Tkachenko², Oleg Nikolaevich Efimov², Galina Petrovna Karpacheva¹, Galina Vasilevna Nikolaeva², Aleksandr Ivanovich Kostev¹, Nadejda Nikolaevna Dremova², Evgeny Nikolaevich Kabachkov²

Affiliations

¹ A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 29 Leninsky Prospect, Moscow 119991, Russia.
² Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences, 1 Academician Semenov Prospect, Moscow 142432, Russia.

Abstract

The electrochemical behavior of new electrode materials based on poly-N-phenylanthranilic acid (P-N-PAA) composites with reduced graphene oxide (RGO) was studied for the first time. Two methods of obtaining RGO/P-N-PAA composites were suggested. Hybrid materials were synthesized via in situ oxidative polymerization of N-phenylanthranilic acid (N-PAA) in the presence of graphene oxide (GO) (RGO/P-N-PAA-1), as well as from a P-N-PAA solution in DMF containing GO (RGO/P-N-PAA-2). GO post-reduction in the RGO/P-N-PAA composites was carried out under IR heating. Hybrid electrodes are electroactive layers of RGO/P-N-PAA composites stable suspensions in formic acid (FA) deposited on the glassy carbon (GC) and anodized graphite foil (AGF) surfaces. The roughened surface of the AGF flexible strips provides good adhesion of the electroactive coatings. Specific electrochemical capacitances of AGF-based electrodes depend on the method for the production of electroactive coatings and reach 268, 184, 111 F∙g^-1 (RGO/P-N-PAA-1) and 407, 321, 255 F∙g^-1 (RGO/P-N-PAA-2.1) at 0.5, 1.5, 3.0 mA·cm^-2 in an aprotic electrolyte. Specific weight capacitance values of IR-heated composite coatings decrease as compared to capacitance values of primer coatings and amount to 216, 145, 78 F∙g^-1 (RGO/P-N-PAA-1_IR) and 377, 291, 200 F∙g^-1 (RGO/P-N-PAA-2.1_IR). With a decrease in the weight of the applied coating, the specific electrochemical capacitance of the electrodes increases to 752, 524, 329 F∙g^-1 (AGF/RGO/P-N-PAA-2.1) and 691, 455, 255 F∙g^-1 (AGF/RGO/P-N-PAA-1_IR).

Keywords: electrode coatings; hybrid composites; organic electrolyte; poly-N-phenylanthranilic acid; reduced graphene oxide.

Grants and funding

This research received no external funding.