journal article·2025-01-22

Ultrahigh Energy Storage Performance in BiFeO3-Based Lead-Free Ceramics via Tuning Structural Homogeneity and Domain Engineering Strategies

Tiantian Zhang, Jianhua Wu, Jinhua Du, Yunying Liu, Hengtong Zhao, Ningning Sun, Ye Zhao, Yong Li, Xihong Hao

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Abstract

Lead-free ceramic-based dielectric capacitors are critical in electronics and environmental safety. Nevertheless, developing ideal lead-free ceramics with excellent energy storage properties remains a challenging task for practical applications. Herein, the enhanced relaxation behavior and increased breakdown electric field are utilized to realize the high energy storage behavior of (0.7- x )BiFeO 3 -0.3BaTiO 3 - x (Na 0.7 Sm 0.1 )NbO 3 (BF-BT- x NSN) ceramics. The introduction of complex perovskite compound NSN facilitates the transition of domains to nanodomains and improves the homogeneity of the microstructure, which results in the enhancement of the relaxation properties and breakdown electric field. Hence, the BF-BT-0.2NSN ceramic can achieve an ultrahigh energy storage density of 13.1 J/cm 3 under an electric field of 650 kV/cm. Moreover, the designed BF-BT-0.2NSN ceramic achieves remarkable thermal stability (20–100 °C), frequency stability (1–100 Hz), and excellent charge/discharge performance. This study develops an idea of dielectric capacitor design and reveals the remarkable potential of BiFeO 3 -based dielectric ceramics within the realm of energy storage applications.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Ferroelectric and Piezoelectric Materials · Dielectric materials and actuators · Multiferroics and related materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of Chemistry and Chemical Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China

Inner Mongolia Key Laboratory of Advanced Ceramic Materials and Devices, School of Materials Science and Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China

Key Laboratory of Green Extraction and Efficient Utilization of Light Rare-Earth Resources (Inner Mongolia University of Science and Technology), Ministry of Education, Baotou 014010, China

Funding

Natural Science Foundation of Inner Mongolia Autonomous Region · Program for ?Grassland Talents? of Inner Mongolia · Major Science and Technology Program of Ordos City · Scientific and Technological Development Foundation of the Central Guidance Local · Basic Research Funds for Universities Directly under Inner Mongolia · Youth Science and Technology Talents Project of Inner Mongolia · Talent Development Fund of Inner Mongolia · Planning Project of Science and Technology of Ordos City · Scientific research project of universities in Inner Mongolia

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