ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Development of DyCoO₃-PANI hybrid as a synergistic bifunctional material for oxygen evolution and supercapacitor applications

Mishkat Majeed, Shaimaa A. M. Abdelmohsen, Ali El-Rayyes, Meznah M. Alanazi, Hussain Sawwan, Eman Alzahrani, Waqas Ul Arifeen, and Reda A. Haggam

Department of Chemistry, Government Graduate College, Taunsa Sharif, Pakistan

E-mail: mishijutt053@gmail.com

Received: 21 February 2026  Accepted: 28 May 2026

Abstract:

The design of bifunctional materials that can store and convert energy efficiently and affordably is critical for the growth of eco-friendly energy sources. This work developed and explored a hybrid of DyCoO₃ and polyaniline (DCO/PANI) as a potential electrode material for oxygen evolution reactions (OER) and supercapacitors (SC_s). The perovskite oxide DyCoO₃ provides several redox-active sites and enhanced structural stability, while the addition of conductive PANI enhances electron transport and increases surface hydrophilicity. This combination enhances both electrochemical performance and lifespan in an alkaline environment. With a current density (C_d) of 10 mA/cm², the DCO-PANI hybrid exhibited the minimizing the Tafel slope (30 mV/dec) and maintaining a lower overpotential (η) of 253 mV. A specific capacitance (C_sp) of 1208.51 F/g and longevity for up to 50 h were all shown by the supercapacitor electrode at a C_d (1 A/g). Strong interactions between DCO and PANI at the interface enable rapid redox process of cobalt (Co) species, thereby improving productivity. The DCO-PANI hybrid exhibits exceptional bifunctional properties, integrating efficient OER catalysis with enhanced energy storage capabilities. This research provides important information for the development of hybrid perovskite-polymer materials and highlights their potential as integrated energy conversion/storage devices for environmentally friendly applications.

Keywords: DyCoO3-PANI hybrid; Bifunctional; Polymer-based; Energy conversion and storage system; Novel material

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-026-05129-1

Chemical Papers 80 (10) 12249–12267 (2026)