Enhancing energy storage performance in BaTiO₃ ceramics via Mg and La co-doping strategy

Autor(es)

Alkathy, Mahmoud S. ; Gatasheh, Mansour K. ; Zabotto, Fabio L. ; Kassim, H. A. ; Raju, K. C. James ; Eiras, Jose A.

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS; v. 35, n. 15, p. 11-pg., 2024-05-01.

Resumo

This work employs the conventional solid-state reaction method to synthesize Ba0.92La0.08Ti0.95Mg0.05O3 (BLMT5) ceramics. The goal is to investigate how defect dipoles affect the ability of lead-free ferroelectric ceramics made from BaTiO3 to store energy. An extensive examination was performed on the crystal structure, dielectric properties, and energy storage capacity. The analysis found that the polarization hysteresis loops of BLMT5 ceramics had a significant maximum P-m of around 30 mu C/cm(3) and a low remanent polarization P-r of around 1.80 mu C/cm(3). In an electric field of 147 kV/cm, defect dipoles significantly increased the recovered energy density, reaching about 1.55 J/cm(3). This also increased energy efficiency by over 91%. Furthermore, the BLMT demonstrates exceptional suitability for thermal stability since its performance remained unaffected at the temperatures under examination. The findings of this research indicate that these materials have great potential as suitable contenders for high-power energy storage applications. (AU)

• Processo FAPESP: 23/05716-6 - Síntese e Caracterização de Materiais Ferroelétricos e Multiferroicos para Aplicações em Armazenamento e Conversores de Energia (Mecânica e Fotovoltaica)"
• Beneficiário: Mahmoud Saleh Mohammed Alkathy
• Modalidade de apoio: Bolsas no Brasil - Programa Capacitação - Treinamento Técnico
• Processo FAPESP: 17/13769-1 - Materiais multiferróicos e ferroelétricos para conversores de energia: síntese, propriedades, fenomenologia e aplicações
• Beneficiário: José Antonio Eiras
• Modalidade de apoio: Auxílio à Pesquisa - Temático