Fatigue resistance of Pb0.90La0.04Ba0.04[(Zr0.6Sn0.4)0.85Ti0.15]O3 antiferroelectric ceramics under fast charge–discharge cycling

Liang

ACS Sustainable Chem. Eng.

et al. 2018

281

Recently, ceramic capacitors with fast charge–discharge performance and excellent energy storage characteristics have received considerable attention. Novel NaNbO3-based lead-free ceramics (0.80NaNbO3-0.20SrTiO3, abbreviated as 0.80NN-0.20ST), featuring ultrahigh energy storage density, ultrahigh power density, and ultrafast discharge performance, were designed and prepared in this study. These 0.80NN-0.20ST ceramics exhibited a high breakdown strength of 323 kV/cm, attributable to their small grain size and dense microstructure, a recoverable energy storage density of 3.02 J/cm3, and an energy storage efficiency of 80.7% at an applied electric field of 310 kV/cm. The excellent stability of energy storage properties in frequency (0.1–1000 Hz), temperature (20–120 °C), and fatigue resistance (cycle number: 105) were also observed in the 0.80NN-0.20ST ceramics. In contrast with other recently reported lead-free ceramic-based dielectric capacitors, the 0.80NN-0.20ST ceramics display a high energy storage efficiency combined with a high recoverable energy storage density, which indicates that they have wide application foreground and potential in the field of energy storage. These ceramics also show a considerable current density of 677 A/cm2, an ultrahigh power density of 23.7 MW/cm3, and a short release duration (∼225 ns). This study brings the NaNbO3-based ceramics into a new chapter of research and application of energy storage dielectric capacitors.

“…The very high values of C D and P D here indicates that 0.80NN-0.20ST ceramics are significantly better than those of any other Pb-based antiferroelectric systems (Table ). ,− …”

Section: Resultsmentioning

confidence: 99%

Novel Sodium Niobate-Based Lead-Free Ceramics as New Environment-Friendly Energy Storage Materials with High Energy Density, High Power Density, and Excellent Stability

Liang

ACS Sustainable Chem. Eng.

et al. 2018

281

“…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

J Am Ceram Soc

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

“…The maximum discharge current of 0.7 A is found at 1400 kV/cm. Based on the circuit theory, the discharge current working in over‐damped state is expressed as follows:

i = \frac{C U p_{1} p_{2}}{p_{1} - p_{2}} false(e^{p_{1} t} - e^{p_{2} t} false), [p_{1}, p_{2} = - \frac{R}{2 L} \pm \sqrt{{()(, \frac{R}{2 L})}^{2} - \frac{1}{italicLC}}]

where L , R , C , and U are the inductance, resistance, capacitance, and charge voltage of the film, respectively . It can be seen that the discharge current of AFE capacitors is proportional to the charge voltage.…”

Section: Resultsmentioning

confidence: 99%

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

Luo

Hao

et al. 2019

J Am Ceram Soc

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.