Work

Development of Nb‐Doped Bismuth Titanate as High‐Performance Supercapacitor Electrode

Year: 2026

Type: article

Abstract: Niobium (Nb)‐doped bismuth titanate (Bi 4 Ti 2.5 Nb 0.5 O 12 ) was developed using a sustainable solid‐state method and demonstrated its potential as a high‐efficiency electrode material for supercapacitor applications. Nb substitution effectively tailors the structural, morphological, and electrical characteristics of bismuth titanate, leading to enhanced electrical conductivity, optimized grain morphology, and accelerated charge transfer and ion diffusion kinetics at the electrode–electrolyte interface. The optimized Nb‐doped sample delivers a high specific capacitance of 630.33 F g −1 at a current density of 3 A g −1 , along with an electrical conductivity of 0.65 Ω −1 m −1 . The material further exhibits optimal cyclic stability, a high energy density of 1983.1 Wh kg −1 , and a power density of 7139.1 W kg −1 , outperforming the undoped counterpart. The synergistic role of Nb doping in enhancing both the electrochemical and surface properties of bismuth titanate optimized the Bi 4 Ti 2.5 Nb 0.5 O 12 as a promising electrode material for high‐performance, next‐generation supercapacitors.

Source: ChemPhysChem

DOI: 10.1002/cphc.70550

Authors: Somya Samantaray, Debabrata Mohanty, I‐Ming Hung, Lalatendu Biswal, Santosh Kumar Satpathy

Institutions: Centurion University of Technology and Management, Yuan Ze University, National Cheng Kung University, KIIT University

Language: English

Topic: Supercapacitor Materials and Fabrication

Subfield: Electronic, Optical and Magnetic Materials

Field: Materials Science

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: green

OpenAlex ID: W7204180144