Temperature Dependence of Energy Storage in Pb0.90La0.04Ba0.04[(Zr0.7Sn0.3)0.88Ti0.12]O3 Antiferroelectric Ceramics

Flexible antiferroelectric (AFE) Pb0.94La0.04Zr0.97Ti0.03O3 (PLZT) thick‐film capacitors were fabricated on nickel foil substrates using sol‐gel method. The thick PLZT film shows pure perovskite phase with dense microstructure. The discharge energy‐storage properties of the thick PLZT film are directly evaluated by the resistance‐inductance‐capacitance (RLC) circuit. The maximum value of the discharge energy‐storage density (Wdis) is 15.8 J/cm3 at 1400 kV/cm and 90% of the corresponding energy is released in a short time of about 250 ns. In addition, the Wdis and discharge time could be adjusted by the bent radius of the film, which provides a simple and feasible solution for the regulation of the electrical performance. Furthermore, the flexible AFE film exhibits good mechanical properties under cycling tests with bending radii down to 2.5 mm and 1500 rounds. This work shows a critical significance in fabricating flexible AFE capacitors for application in modern electronics and electrical power systems.

Section: Resultssupporting

confidence: 82%

Flexible antiferroelectric thick film deposited on nickel foils for high energy‐storage capacitor

Luo

Hao

et al. 2019

“…Currently, the energy‐storage density and efficiency of dielectric material are usually calculated by the P‐E loop, according to the formulas:

W_{normalre} = \int_{P_{re}}^{P_{\max}} E d P

η = \frac{W_{re}}{(W_{normalre} + W_{normalloss})} \times 100 %

where W re is the recoverable energy‐storage density, η is energy efficiency, and W loss represents the energy loss density . The energy‐storage performance from P‐E loops is named as quasi‐static method.…”

Section: Resultsmentioning

confidence: 99%

Multifunctional antiferroelectric MLCC with high‐energy‐storage properties and large field‐induced strain

Chen

Sun

et al. 2017

Multifunctional antiferroelectric (Pb0.92−xBa0.05La0.02Dyx)(Zr0.68Sn0.27Ti0.05)O3 multilayer ceramic capacitor (MLCC) was prepared successfully by the tape‐casting method. The MLCC with 10‐thick layers exhibits compact structure, excellent energy‐storage, and strain properties. For energy‐storage performance, the pulsed discharge current reveals that the stored energy can be released in a quite short time of about 600 ns. The maximum discharge energy density was obtained in the sample with x = 0.04 at 300 kV/cm, which was 3.8 J/cm3 calculated by the hysteresis loop and 2.7 J/cm3 by the pulsed discharge current, respectively. Meanwhile, the MLCC possesses large strain property, where the sample with x = 0.04 shows a high field‐induced strain of 0.71% at room temperature. In addition, the temperature dependence of energy‐storage and strain demonstrates that the MLCC has good temperature stability. The results indicate that the multifunctional MLCC can be a promising candidate for the application in energy and sensor fields.

“…Pulsed power is widely used in many fields, such as electron beam, electromagnetic pulse bomb, health care, and electrothermal guns . As the key energy storage devices, capacitors with high performance are greatly needed to satisfy the developing pulsed power technology . Antiferroelectrics are good candidates for pulsed capacitors due to their high energy‐storage density, fast discharge time, good fatigue resistance, etc .…”

Section: Introductionmentioning

confidence: 99%

“…As the key energy storage devices, capacitors with high performance are greatly needed to satisfy the developing pulsed power technology . Antiferroelectrics are good candidates for pulsed capacitors due to their high energy‐storage density, fast discharge time, good fatigue resistance, etc . Various AFE materials, especially the La‐ and Nb‐doped lead zirconate stannate titanate (PLZST, PNZST), have been developed and investigated for pulsed capacitors …”

Section: Introductionmentioning

confidence: 99%

Effects of phase transition on discharge properties of PLZST antiferroelectric ceramics

Tian

Zhu

et al. 2017

Self Cite

The effects of electric field-induced phase transition on discharge properties of Pb 0.94 La 0.04 [(Zr 0.52 Sn 0.48 ) 0.84 Ti 0.16 ]O 3 antiferroelectric (AFE) ceramics were investigated. Due to the forward phase transition, high polarization and energy density are achieved. The backward phase transition results in nonlinear increase of current in underdamped circuit. The stored charge (14.2 lC under 40 kV/cm at 22°C) can be released completely in very short duration due to the low remanent polarization. With increasing temperature, the polarization and releasable energy decline. However, the current amplitude reaches maximum at 40°C, which is attributed to the backward phase transition. The maximum current and power density are as high as 143.8 A/cm 2 and 2.4 MW/cm 3 , which indicates the potential of the ceramics for pulsed capacitors. K E Y W O R D S electroceramics, ferroelectricity/ferroelectric materials