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

Nano-architectured BaO thin film electrode synthesized via SILAR technique for supercapacitor application

Vikas B. Suryawanshi, Rushikesh G. Bobade, Deepak S. Gaikwad, Umesh T. Nakate, Shoyebmohamad F. Shaikh, Balkrishna J. Lokhande, and Revanappa C. Ambare

Department of Chemistry, KMC College, Raigad, Khopoli, India

E-mail: bjlokhande@yahoo.com

Received: 17 August 2023  Accepted: 14 February 2024

Abstract:

A promising thin film electrode material of barium oxide (BaO) for supercapacitors had been prepared by successive ionic layer adsorption and reaction (SILAR) technique. Several analytical tools such as X-ray diffractometer, field emission scanning electron microscopy (FE-SEM), and transmission electron microscopy (TEM) were used to characterize the barium oxide. The electrochemical properties of created thin films were elucidated by cyclic voltammetry (CV), chronopotentiometry (CP) measurements, and electrochemical impedance spectroscopy (EIS). This material showed excellent cycling capability; it retains 91.1% capacitance retention after 7500 cycles. The maximum value of a specific capacitance (Cs) was 405.72 F/g at a 5 mV/s scan rate in 1 M KOH electrolyte. The obtained maximum values of energy density and power density were 53.57 Wh/kg and 2390 W/kg at 4 mA/cm² in 1 M KOH, respectively. The internal resistance of the BaO thin film was ~ 0.83 Ω. These outcomes designate the high-rate capability performances of BaO electrodes, and it can be accepted as high-performance thin film electrode material.

Graphical Abstract

Keywords: Barium oxide; Nanorod; SILAR; Supercapacitor application; Thin film

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-024-03400-x

Chemical Papers 78 (8) 4689–4697 (2024)