Energy storage properties and electrocaloric effect of Ba0.65Sr0.35TiO3 ceramics near room temperature

Ge, Peng-Zu; Tang, Xin‐Gui; Liu, Qiu-Xiang; Jin, Yanping; Li, Wenhua; Luo, Jie

doi:10.1007/s10854-017-8008-x

Cited by 31 publications

(9 citation statements)

References 41 publications

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“…Energy efficiency remains above 92% even at the maximum applied electric field. The energy storage comparison of 0.6BST–0.4BMH ceramic with other BST-based lead-free ceramics is given in Figure d. ,,− The W rec of 0.6BST–0.4BMH is superior to other reported BST-based ceramics whose W rec are less than 2 J/cm 3 . The improved BDS of the studied 0.6BST–0.4BMH ceramic is due to the small grain size, low dielectric loss, and high resistivity, which greatly benefit the enhanced W rec .…”

Section: Results and Discussionmentioning

confidence: 96%

(Ba,Sr)TiO₃–Bi(Mg,Hf)O₃ Lead-Free Ceramic Capacitors with High Energy Density and Energy Efficiency

Kong

Yang

Cheng

et al. 2020

ACS Appl. Energy Mater.

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Dielectric capacitors with high energy storage performance have been actively studied for emerging applications. In this work, a series of environmental friendly lead-free relaxor ferroelectric ceramics, (1 − x)(Ba 0.75 Sr 0.25 )TiO 3 −xBi(Mg 0.5 Hf 0.5 )O 3 with 0 ≤ x ≤ 0.5 [abbreviated as (1 − x)BST−xBMH], were synthesized by a high-temperature solid-state reaction method. The perovskite structure without any secondary phase can be obtained in samples with x ≤ 0.4. As the BMH content increases, the polarization−electric field (P−E) loop becomes slim and slanted. A large recoverable energy storage density of 4.3 J/cm 3 and high energy efficiency of 92% were achieved simultaneously in 0.6BST−0.4BMH at 390 kV/cm. The fine grain morphology with minimal porosity and the high conductivity activation energy were responsible for the enhanced breakdown strength. Of particular importance is that the 0.6BST−0.4BMH ceramic shows excellent temperature stability and cycling reliability with energy density variations below 3 and 4%, respectively. In addition, the 0.6BST−0.4BMH ceramic possesses fast discharge time (∼0.59 μs) with a high power density of 3.5 MW/cm 3 . All these merits reveal that the lead-free 0.6BST−0.4BMH relaxor ceramic is a promising candidate for high-temperature and high-power energy storage capacitor applications.

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Section: Results and Discussionmentioning

confidence: 96%

(Ba,Sr)TiO₃–Bi(Mg,Hf)O₃ Lead-Free Ceramic Capacitors with High Energy Density and Energy Efficiency

Kong

Yang

Cheng

et al. 2020

ACS Appl. Energy Mater.

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“…The inset of Figure 4 shows an unsaturated loose P-E loop of the Au/BST/Pt thin layer capacitor, the remnant polarization (Pr), saturation polarization (Ps) and coercive field (Ec) were 0.223 μC/cm 2 , 1.61 μC/cm 2 , and 20.3 kV/cm, respectively. Bulk (Ba0.65Sr0.35)TiO3 material is cubic phase at room temperature, but due to the relaxor ferroelectric characteristics of small grain (Ba0.65Sr0.35)TiO3, it still has ferroelectric properties at room temperature and higher temperatures [36]. From Figures 1 and 4, the BST is cubic phase at room temperature, and the ferroelectric properties comes from the polar nanoregions [37,38].…”

Section: Resultsmentioning

confidence: 98%

Low Dielectric Loss and Multiferroic Properties in Ferroelectric/Mutiferroic/Ferroelectric Sandwich Structured Thin Films

2019

Coatings

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Bismuth ferrite (BiFeO 3 ) has proven to be promising for a wide variety of microelectric and magnetoelectric devices applications. In this work, a dense (Ba 0.65 Sr 0.35 )TiO 3 (BST)/ (Bi 0.875 Nd 0.125 )FeO 3 (BNF)/BST trilayered thin film grown on Pt-coated Si (100) substrates was developed by the rf-sputtering. For comparison, single-layered BNF and BST were also prepared on the same substrates, respectively. The results show that the dielectric loses suppression in BST/BNF/BST trilayered thin films at room temperature but has enhanced ferromagnetic and ferroelectric properties. The remnant polarization (P r ) and coercive electronic field (E c ) were 5.51 µC/cm 2 and 18.3 kV/cm, and the remnant magnetization (M r ) and coercive magnetic field (H c ) were 10.1 emu/cm 3 and 351 Oe, respectively, for the trilayered film. We considered that the bismuth's volatilization was limited by BST bottom layers making the Bi/Fe in good station, and the action of BST layer in the charge transfer between BNF thin film and electrode led to the quite low leakage current and enhanced multiferroic property. The origin of the mechanism of the highly enhanced dielectric constant and decreased loss tanδ was discussed.Coatings 2019, 9, 502 2 of 8 fields [21,22]. The electric field control of magnetism requires deterministic control of the magnetic order, and the magnetoelectric coupling in multiferrous BiFeO 3 can be understood [23]. In addition, the others FE/MF heterostructured thin films and FE/MF(FE)/FE trilayered structural thin films were prepared [24][25][26][27], but these films still have a high leakage current density and a dissipation factor.In this work, Ba 0.65 Sr 0.35 TiO 3 , Bi 0.875 Nd 0.125 FeO 3 and Ba 0.65 Sr 0.35 TiO 3 -Bi 0.875 Nd 0.125 FeO 3 -Ba 0.65 Sr 0.35 TiO 3 thin films grown on Pt/Ti/SiO 2 /Si (100) substrates were prepared by radio frequency magnetron sputtering. The ferroelectric, ferromagnetic, and electrical properties of these film samples were investigated. The low dielectric loss, low leakage current density, and multiferroic properties enhancement mechanism of the sandwich structural thin films are also discussed.

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“…Lead-based materials are hazardous in nature and unfriendly to the environment, which restricts it to use for application purposes. To look for the environmentally friendly ferroelectric materials, lead-free materials like (Na 0.5 Ba 0.5 )TiO 3 , , BaTiO 3 , − (K 0.5 Na 0.5 )NbO 3 , ,− and Ba 0.65 Sr 0.35 TiO 3 , based materials have potential for fulfilling various purposes. Alkaline-based materials such as K 0.5 Na 0.5 NbO 3 (KNN), solid solution of NaNbO 3 (antiferroelectric), and KNbO 3 (ferroelectric) have shown high potential for an EC refrigerator.…”

Section: Introductionmentioning

confidence: 99%

Coexistence of Large Negative and Positive Electrocaloric Effects and Energy Storage Performance in LiNbO₃ Doped K_0.5Na_0.5NbO₃ Nanocrystalline Ceramics

Kumar

Singh

2019

ACS Appl. Electron. Mater.

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The electrocaloric effect (ECE) has been investigated in (1 − x)K 0.5 Na 0.5 NbO 3 −xLiNbO 3 (KNN-xLiN) nanocrystalline ceramics with compositions in the range of 0.01 ≤ x ≤ 0.05 by the indirect measurement using Maxwell's approach. The coexistence of the negative and positive ECEs has been achieved in all samples. The maximum values of negative and positive ECE were found to be −0.40 and 0.24 K for x = 0.01, −0.23 and 0.18 K for x = 0.03, and −0.13 and 0.29 K for x = 0.05, respectively. The maximum recoverable energy densities were found to be 0.12, 0.13, and 0.128 J/cm 3 with energy storage efficiencies of 30, 50, and 51% at an electric field of 45 kV/cm for x = 0.01, 0.03, and 0.05, respectively. The coexistence of the negative and positive ECEs with a high recoverable energy density in one material makes it a promising candidate for highly efficient, environmentally friendly cooling devices and energy-storage device applications.

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Energy storage properties and electrocaloric effect of Ba0.65Sr0.35TiO3 ceramics near room temperature

Cited by 31 publications

References 41 publications

(Ba,Sr)TiO₃–Bi(Mg,Hf)O₃ Lead-Free Ceramic Capacitors with High Energy Density and Energy Efficiency

(Ba,Sr)TiO₃–Bi(Mg,Hf)O₃ Lead-Free Ceramic Capacitors with High Energy Density and Energy Efficiency

Low Dielectric Loss and Multiferroic Properties in Ferroelectric/Mutiferroic/Ferroelectric Sandwich Structured Thin Films

Coexistence of Large Negative and Positive Electrocaloric Effects and Energy Storage Performance in LiNbO₃ Doped K_0.5Na_0.5NbO₃ Nanocrystalline Ceramics

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Energy storage properties and electrocaloric effect of Ba0.65Sr0.35TiO3 ceramics near room temperature

Cited by 31 publications

References 41 publications

(Ba,Sr)TiO3–Bi(Mg,Hf)O3 Lead-Free Ceramic Capacitors with High Energy Density and Energy Efficiency

(Ba,Sr)TiO3–Bi(Mg,Hf)O3 Lead-Free Ceramic Capacitors with High Energy Density and Energy Efficiency

Low Dielectric Loss and Multiferroic Properties in Ferroelectric/Mutiferroic/Ferroelectric Sandwich Structured Thin Films

Coexistence of Large Negative and Positive Electrocaloric Effects and Energy Storage Performance in LiNbO3 Doped K0.5Na0.5NbO3 Nanocrystalline Ceramics

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(Ba,Sr)TiO₃–Bi(Mg,Hf)O₃ Lead-Free Ceramic Capacitors with High Energy Density and Energy Efficiency

(Ba,Sr)TiO₃–Bi(Mg,Hf)O₃ Lead-Free Ceramic Capacitors with High Energy Density and Energy Efficiency

Coexistence of Large Negative and Positive Electrocaloric Effects and Energy Storage Performance in LiNbO₃ Doped K_0.5Na_0.5NbO₃ Nanocrystalline Ceramics