Significantly enhanced energy storage density of NNT ceramics using aliovalent Dy3+ Dopant
Loading...
Date
2021
Journal Title
Journal ISSN
Volume Title
Publisher
American Chemical Society
Abstract
Sodium niobate (NN)-based lead-free ceramic DyxNa1–x(Nb0.9Ta0.1)O3 denoted as (DNNT) x = 0, 0.05, 0.1, 0.2, and 0.3 was synthesized via a conventional solid-state method to achieve bulk lead-free dielectric ceramics having an improved energy storage capability that can conceivably be used in pulsed power technology. The addition of Dy3+ broadened the phase transition peak, thereby strengthening the relaxor properties of the DNNT ceramic materials. The sample’s microstructure was explored using a scanning electron microscope, and its corresponding phase structure via X-ray diffraction (XRD). A systematic study was carried out for energy storage properties of 0.2 mol of Dy3+ (DNNT20) where a recoverable energy storage density (Wrec) of 4.61 J cm–3 with a breakdown strength (BDS) of 478 kV cm–1 and an energy storage efficiency (η) of ≈84% were achieved. Additionally, the DNNT20 ceramics displayed comparatively reasonable temperature stability (20–140 °C), excellent frequency stability (0.1–100 Hz), and also fast charge–discharge speed (≤0.5 μs). Thus, the DNNT20 ceramic materials can be of probable use for future energy storage applications.
Description
Abstract. Full text article available at: https://doi.org/10.1021/acssuschemeng.0c08714
Keywords
Dielectric properties, Lead-free, Charge−discharge properties, Particle size distribution, Energy storage, Sodium niobate, Power technology
Citation
Emmanuel, M., Hao, H., Liu, H., Jan, A., & Alresheedi, F. (2021). ACS Sustainable Chemistry & Engineering 9 (17), 5849-5859 DOI: 10.1021/acssuschemeng.0c08714