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

Facile hydrothermal synthesis of DyAlO₃/PANI nanostructure electrode material for supercapacitor applications

Bushra Noor, Nabila E. Yousif, Hala M. Abo-Dief, Abdul Khaliq, Shahir Hussain, Rizwan Ul Hassan, and Abhinav Kumar

Department of Physics, Ghazi University, D.G Khan, Pakistan

E-mail: bushranoor3715@gmail.com

Received: 3 October 2025  Accepted: 24 October 2025

Abstract:

Current studies on effective and sustainable energy sources and storage methods have developed because of challenges like pollution, energy restrictions and depletion of fossil fuels. Perovskite oxide nanocomposite material used as electrodes is an additional candidate for supercapacitors (SC_s). Here we developed DyAlO₃ and DyAlO₃/PANI nanocomposites via hydrothermal process for storage of energy devices. X-ray diffraction (XRD) and Brunauer–Emmett–Teller (BET) investigation were analyzed to investigate the structural features and surface area of developed material, correspondingly. The crystalline behavior of DyAlO₃ and DyAlO₃/PANI nanosheets was analyzed through XRD. The electrochemical result of fabricated material utilizes a 3.0 M KOH electrolyte for performing cyclic voltammetry (CV), galvanostatic charging-discharging (GCD) and electrochemical impedance spectroscopy (EIS). Electrochemical performances demonstrate that DyAlO₃/PANI nanostructure possesses a specific capacitance (C_sp) of 823.18 F g⁻¹ at current density (C_d) of 1 A g⁻¹ and remarkable cycling stability during 3000 cycles. Moreover, DyAlO₃/PANI nanostructure substitutes exhibited energy density (E_d) and power density (P_d) of 19.59 Wh kg⁻¹ and 207 W k g⁻¹, individually. The produced DyAlO₃/PANI nanostructure exhibited a lower solution resistance, according to the Nyquist plot and it exhibited stable behavior for 40 h. The exceptional capabilities of the electrode material DyAlO₃/PANI emphasized in this study and presented a new technique for creating multi-element hybrid materials had outstanding performance and low cost, that can be applied to future-generation supercapacitor applications.

Keywords: DyAlO3/PANI nanostructure; Metal oxide; Hydrothermal synthesis; High capacitance; Supercapacitor applications

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-025-04501-x

Chemical Papers 80 (2) 1965–1976 (2026)