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 capacitors

Zhang, Xiaoting; Zhao, Lili; Liu, Liwei; Zhang, Zhi’ang; Cui, Bin

doi:10.1016/j.cej.2022.135061

Cited by 38 publications

(14 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[26] Second, the reduction of both the A-site vacancies and oxygen vacancies originating from Pb doping is also beneficial to reduce grain size. [27] Such fine grain is beneficial for improving E b , as will be discussed in the following.…”

Section: Resultsmentioning

confidence: 97%

Achieving Excellent Energy Storage Properties in Fine‐Grain High‐Entropy Relaxor Ferroelectric Ceramics

Guo

Zhang

et al. 2022

Adv Elect Materials

View full text Add to dashboard Cite

ABO3‐type high‐entropy relaxor ferroelectric ceramics have rarely been studied in energy storage capacitor owing to easy formation of impurity phase. In this work, single phase (Bi0.2Na0.2Ba0.2Sr0.2Ca0.2)TiO3‐xmol%PbO high‐entropy ceramics are fabricated and investigated. The optimal composition of x = 2.0 shows a remarkable comprehensive energy storage performance with high recoverable energy density Wrec = 8.2 J cm–3, ultrahigh efficiency η = 92.2%, excellent temperature stability (Wrec = 4.4 J cm‐3 ± 4%, η = 91% ± 3% within the range of 25–120 °C), and ultrafast discharge rate t0.9 = 5.9 µs. Three key factors, low remnant polarization Pr originating from high‐entropy enhanced relaxation degree, high maximum polarization Pm due to special electronic structure of Pb ion, and high electrical breakdown strength Eb stemming from small grain size, are responsible for the improved energy storage properties. These results provide a novel strategy of developing high‐entropy ceramics to optimize electrical performances including energy storage property.

show abstract

Section: Resultsmentioning

confidence: 97%

Achieving Excellent Energy Storage Properties in Fine‐Grain High‐Entropy Relaxor Ferroelectric Ceramics

Guo

Zhang

et al. 2022

Adv Elect Materials

View full text Add to dashboard Cite

show abstract

“…As is well known, the electrical breakdown strength of ceramics is influenced by many factors, such as porosity [19,20], grain size [18,21,22], secondary phase [23,24], interface polarization [25],…”

Section: Introductionmentioning

confidence: 99%

“…and so on. Many improvement strategies, e.g., glass modification, design of core-shell structure or multilayer structure, two-step sintering and a combination of these methods are usually used to improve the electrical breakdown strength of dielectric ceramics [24,[26][27][28][29][30][31]. Among them, glass modification is a relatively common and simple method, which can reduce the porosity and grain size, thereby increase the energy storage density by improving the electrical breakdown strength [32][33][34][35][36][37][38].…”

Section: Introductionmentioning

confidence: 99%

BS _0.5BNT-based relaxor ferroelectric ceramic/glass–ceramic composites for energy storage

Shi¹,

Li²,

Shen³

et al. 2023

Journal of Advanced Ceramics

View full text Add to dashboard Cite

Relaxor ferroelectric ceramics have very high dielectric constant but relatively low electrical breakdown strength, while glass-ceramics exhibit higher electrical breakdown strength due to the more uniformly dispersed amorphous phases and submicrocrystals/nanocrystals inside. How to effectively combine the advantages of both relaxor ferroelectric ceramics and glass-ceramics is of 2 great significance for the development of new dielectric materials with high energy storage performances. In this work, we firstly prepared BaO-SrO-Bi2O3-Na2O-TiO2-Al2O3-SiO2 (represented by GS) glass powder, and then fabricated (Ba0.3Sr0.7)0.5(Bi0.5Na0.5)0.5TiO3+xwt.%GS ceramic composites (abbreviated as BS0. x=0,2,6,10,14,16,18). Submicrocrystals/nanocrystals with a similar composition to BS0.5BNT were crystalized from the glass, ensuring the formation of uniform core-shell structure in BS0.5BNT-xGS relaxor ferroelectric ceramic/glass-ceramic composites. When the addition amount of GS was 14 wt.%, the composite possessed both high dielectric constant (εr>3200 @1 kHz) and high electrical breakdown strength (Eb~170 kV/cm) at room temperature, and their recoverable energy storage density and efficiency were Wrec=2.1 J/cm 3 and η=65.2%, respectively. The BS0.5BNT-14GS composite also had several attractive properties such as good temperature, frequency, cycle stability, and fast charge-discharge speed. This work provides insights into the relaxor ceramic/glass-ceramic composites for pulsed power capacitors and sheds light on the utilization of the hybrid systems.

show abstract

“…9 compares the energy storage efficiency and recoverable energy storage density of various lead-free ceramics that have potential for applications under medium-low electric fields. [35][36][37][38][39][40][41][42][43][44][45][46][47][48][49][50][51][52][53][54] It can be seen that compared with other lead-free ceramics, 0.85BBNKT-0.15SMN ceramic has certain advantages over other lead-free ceramics in terms of overall energy storage performance.…”

Section: Energy Storage Properties Of Bbnkt-smn Ceramicsmentioning

confidence: 99%

Enhanced energy storage properties in BNT-based ceramics with a morphotropic phase boundary modified by Sr(Mg_1/3Nb_2/3)O₃

Liu,

Yan,

et al. 2023

J. Mater. Chem. C

View full text Add to dashboard Cite

show abstract

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 capacitors

Cited by 38 publications

References 48 publications

Achieving Excellent Energy Storage Properties in Fine‐Grain High‐Entropy Relaxor Ferroelectric Ceramics

Achieving Excellent Energy Storage Properties in Fine‐Grain High‐Entropy Relaxor Ferroelectric Ceramics

BS _0.5BNT-based relaxor ferroelectric ceramic/glass–ceramic composites for energy storage

Enhanced energy storage properties in BNT-based ceramics with a morphotropic phase boundary modified by Sr(Mg_1/3Nb_2/3)O₃

Contact Info

Product

Resources

About

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 capacitors

Cited by 38 publications

References 48 publications

Achieving Excellent Energy Storage Properties in Fine‐Grain High‐Entropy Relaxor Ferroelectric Ceramics

Achieving Excellent Energy Storage Properties in Fine‐Grain High‐Entropy Relaxor Ferroelectric Ceramics

BS 0.5BNT-based relaxor ferroelectric ceramic/glass–ceramic composites for energy storage

Enhanced energy storage properties in BNT-based ceramics with a morphotropic phase boundary modified by Sr(Mg1/3Nb2/3)O3

Contact Info

Product

Resources

About

BS _0.5BNT-based relaxor ferroelectric ceramic/glass–ceramic composites for energy storage

Enhanced energy storage properties in BNT-based ceramics with a morphotropic phase boundary modified by Sr(Mg_1/3Nb_2/3)O₃