Rhea Fe G. Sinajon, R.R. Chien, Rhys Montecillo, Cheng-Sao Chen, J. Anthoniappen, Kuei-Chih Feng, Chi-Shun Tu
Sustainable dielectric ceramic capacitors featuring high energy-storage capability, temperature stability, and fatigue resistance have become crucial for advancing energy storage technologies. This study explores the ceramic-interlayer thickness effects of energy storage capability in antiferroelectric NaNbO3 modified 0.7BiFeO3-0.3BaTiO3 multilayer ceramic capacitors (MLCC). The breakdown electric strength (Eb) was remarkably increased from 350 kV/cm to 600 kV/cm as ceramic-interlayer thickness was reduced from 57 μm to 18 μm. Hence, recoverable energy density (Wrec) was enhanced from 3.0 J/cm3to 7.0 J/cm3with efficiencies >70 %. The energy storage performance in MLCCs with thinner ceramic interlayers was significantly enhanced due to the synergistic effect of multiple phases, nanostructures, and interfacial electric fields at grain boundaries. In addition, MLCCs with thicker ceramic interlayers exhibited enhanced charge-discharge fatigue resistance, maintaining a variation of less than 8 % after 1 × 104cycles at a charging electric field of 200 kV/cm. This study demonstrates the potential of NaNbO3 modulated BiFeO3-BaTiO3 multilayer ceramics for advanced capacitive energy storage applications. © 2026 Elsevier Ltd and Techna Group S.r.l. All rights are reserved, including those for text and data mining, AI training, and similar technologies.
Graduate Institute of Applied Science and Engineering, Fu Jen Catholic University, New Taipei City, 24205, Taiwan; Department of Mechanical Engineering, Ming Chi University of Technology, New Taipei City, 24301, Taiwan; Department of Physics, Silliman University, Dumaguete City, 6200, Philippines; Department of Mechanical Engineering, National Taiwan University of Science and Technology, Taipei, 10607, Taiwan; Department of Physics, University of San Carlos, Cebu City, 6000, Philippines; Research Center for Intelligent Medical Devices, Ming Chi University of Technology, New Taipei City, 24301, Taiwan
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