Suppressing interfacial polarization via entropy increase strategy for superior energy-storage performance of Na0.5Bi0.5TiO3-based ceramics
Source abstract
Abstract
High entropy engineering has emerged as a new strategy to improve the energy storage density and efficiency of dielectric capacitors due to its unique design concept. However, the recyclable energy storage density (Wrec) reported so far has never exceeded 2 J/cm3 for the type of high-entropy ceramics with equimolar elements occupying A or B site. In order to improve this type high-entropy ceramics. Na0.5Bi0.5TiO3 (NBT) was used as the matrix, equimolar Sr2+, La3+, K+ and Ba2+ were gradually introduced into at the A-site of the matrix lattice to increase configurational entropy. The results show that the relaxor degree, band gap width, interfacial polarization, and breakdown field strength are effectively improved with increasing entropy. Among them, suppressing interfacial polarization is an important factor to increase the breakdown field strength and thus enhance the energy storage performance. The (Na1/6Bi1/6Sr1/6La1/6K1/6Ba1/6)TiO3 (NBSLKBT) sample with the highest configurational entropy shows an ultra-high Wrec of 9.8 J/cm3 and the energy storage efficiency (η = 86.5%). This work demonstrates that entropy strategy for superior energy-storage performance still works on the above type high-entropy ceramics and opens up a new way of modulating interface polarization by entropy increase strategy.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Ferroelectric and Piezoelectric Materials · Dielectric properties of ceramics · Microwave Dielectric Ceramics Synthesis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (51)
Show source-provided references
1. Hierarchically polar structures induced superb energy storage properties for relaxor Bi0.5Na0.5TiO3–based ceramics
2. Superb energy storage capability for NaNbO3–based ceramics featuring labyrinthine submicro–domains with custered lattice distortions10.1002/smll.202303915 ↗
3. Chemical design of Pb-free relaxors for giant capacitive energy storage10.1021/jacs.3c02811 ↗
4. Perovskite lead-free dielectrics for energy storage applications10.1016/j.pmatsci.2018.12.005 ↗
5. High-performance dielectric ceramic films for energy storage capacitors: progress and outlook10.1002/adfm.201803665 ↗
6. High-entropy ceramics10.1038/s41578-019-0170-8 ↗
7. Data–driven discovery of formation ability descriptors for high–entropy rare-earth monosilicates10.1016/j.jmat.2023.11.017 ↗
8. Entropy–stabilized oxides10.1038/ncomms9485 ↗
9. Preparation and corrosion resistance of high–entropy disilicate (Y0.25Yb0.25Er0.25Sc0.25)2Si2O7 ceramics10.1016/j.corsci.2021.109786 ↗
10. Charge–induced disorder controls the thermal conductivity of entropy–stabilized oxides10.1002/adma.201805004 ↗
11. Colossal dielectric constant in high entropy oxides10.1002/pssr.201600043 ↗
12. (Hf0.2Zr0.2Ta0.2Nb0.2Ti0.2)C high–entropy ceramics with low thermal conductivity10.1111/jace.15779 ↗
13. Lead-free medium-entropy (Na0.47(1-x)Bi0.47(1-x)Ba0.06(1-x)Sr0.7xNd0.2x)TiO3 relaxor ceramics with robust energy–storage performance
14. Decreasing polar–structure size: achieving superior energy storage properties and temperature stability in Na0.5Bi0.5TiO3–based ceramics for low electric field and high–temperature applications10.1016/j.jeurceramsoc.2021.05.036 ↗
15. Recent progress of high–entropy materials for energy storage and conversion10.1039/D0TA09578H ↗
16. High–entropy energy materials: challenges and new opportunities10.1039/D1EE00505G ↗
17. High–entropy ceramics: present status, challenges, and a look forward
18. Simultaneous excellent energy storage density and efficiency under applied low electric field for high entropy relaxor ferroelectric ceramics10.1016/j.materresbull.2022.112024 ↗
19. Microstructure and dielectric properties of high entropy Ba(Zr0.2Ti0.2Sn0.2Hf0.2Me0.2)O3 perovskite oxides10.1016/j.ceramint.2019.11.239 ↗
20. Large energy capacitive high-entropy lead-free ferroelectrics10.1007/s40820-023-01036-2 ↗
21. Multi–symmetry high–entropy relaxor ferroelectric with giant capacitive energy storage10.1016/j.nanoen.2023.108458 ↗
22. Enhanced energy storage performance of BaTi0.97Ca0.03O2.97–based ceramics by doping high-entropy perovskite oxide10.1016/j.jallcom.2022.166179 ↗
23. Effect of liquid–phase sintering on the breakdown strength of barium titanate10.1111/j.1551-2916.2007.01637.x ↗
24. Electroceramics for high–energy density capacitors: current status and future perspectives10.1021/acs.chemrev.0c01264 ↗
25. Emerging new phase boundary in potassium sodium–niobate based ceramics10.1039/C9CS00432G ↗
26. Achieving high energy storage performance below 200 kV/cm in BaTiO3–based medium–entropy ceramics10.1016/j.ceramint.2023.03.156 ↗
27. Enhanced capacitive energy storage and dielectric temperature stability of A–site disordered high–entropy perovskite oxides
28. Simultaneously achieving large energy density and high efficiency in NaNbO3–(Sr, Bi)TiO3–Bi (Mg, Zr)O3 relaxor ferroelectric ceramics for dielectric capacitor applications10.1039/D2TA01808J ↗
29. High energy–storage performance in X9R–type Na0.5Bi0.5TiO3–based lead–free ceramics10.1016/j.ceramint.2023.01.189 ↗
30. Interfacial polarization restriction for ultrahigh energy–storage density in lead–free ceramics
31. Origin of high–temperature relaxor–like behavior in CaCu3Ti4O1210.1063/1.4745014 ↗
32. Point defect structure of La–doped SrTiO3 ceramics with colossal permittivity10.1016/j.actamat.2018.10.025 ↗
33. Electronic properties of calcium and zirconium Co–doped BaTiO3
34. Interface and defect modulation via a core–shell design in (Na0.5Bi0.5TiO3@La2O3)–(SrSn0.2Ti0.8O3@La2O3)–Bi2O3–B2O3–SiO2 composite ceramics for wide–temperature energy storage capacitors10.1016/j.cej.2022.135061 ↗
35. Superior comprehensive energy storage properties in Bi0.5Na0.5TiO3–based relaxor ferroelectric ceramics10.1016/j.cej.2020.124158 ↗
36. Significantly improved energy–storage performance of NaNbO3 lead–free ceramics with Ca0.7Bi0.2TiO3 addition10.1016/j.jallcom.2023.170962 ↗
37. Improved energy storage properties achieved in (K, Na) NbO3–based relaxor ferroelectric ceramics via a combinatorial optimization strategy
38. Ultrahigh energy density in short–range tilted NBT–based lead–free multilayer ceramic capacitors by nanodomain percolation10.1016/j.ensm.2021.01.023 ↗
39. Aliovalent doping engineering for A– and B–sites with multiple regulatory mechanisms: a strategy to improve energy storage properties of Sr0.7Bi0.2TiO3-based lead-free relaxor ferroelectric ceramics10.1021/acsami.1c04274 ↗
40. Outstanding energy–storage and charge–discharge performances in Na0.5Bi0.5TiO3 lead–free ceramics via linear additive of Ca0.85Bi0.1TiO310.1016/j.cej.2022.135065 ↗
41. Boosting energy–storage performance in lead–free ceramics via polyphase engineering in the superparaelectric state10.1016/j.compositesb.2023.110630 ↗
42. Simultaneous achievement of ultrahigh energy storage density and high efficiency in BiFeO3–based relaxor ferroelectric ceramics via a highly disordered multicomponent design10.1039/D2TA02893J ↗
43. Achieve ultrahigh energy storage performance in BaTiO3–Bi(Mg1/2Ti1/2)O3 relaxor ferroelectric ceramics via nano–scale polarization mismatch and reconstruction10.1016/j.nanoen.2019.104264 ↗
44. Pyrochlore–based high–entropy ceramics for capacitive energy storage
45. Structure, dielectric, and relaxor properties of BaTiO3–modified high–entropy (Bi0.2Na0.2K0.2Ba0.2Ca0.2)TiO3 ceramics for energy storage applications10.1016/j.jallcom.2023.169626 ↗
46. A new class of high–entropy perovskite oxides10.1016/j.scriptamat.2017.08.040 ↗
47. Dielectric properties and electrocaloric effect of high–entropy (Na0.2Bi0.2Ba0.2Sr0.2Ca0.2)TiO3 ceramic10.1063/1.5126652 ↗
48. Phase and band structure engineering via linear additive in NBT-ST for excellent energy storage performance with superior thermal stability10.1021/acsami.2c17170 ↗
49. Investigation of switching behavior of acceptor–doped ferroelectric ceramics10.1016/j.actamat.2019.03.033 ↗
50. Giant energy–storage density with ultrahigh efficiency in lead–free relaxors via high–entropy design10.1038/s41467-022-30821-7 ↗
51. Role of point defects in the formation of relaxor ferroelectrics10.1016/j.actamat.2021.117558 ↗