Emergence of relaxor behavior along with enhancement in energy storage performance in light rare-earth doped Ba0.90Ca0.10Ti0.90Zr0.10O3 ceramics

2020 ◽  
Author(s):  
Aditya Jain ◽  
Y.G. Wang ◽  
H. Guo
Keyword(s):  
Rare Earth ◽  
Energy Storage ◽  
Relaxor Behavior ◽  
Light Rare Earth ◽  
Storage Performance ◽  
Rare Earth Doped

Energy-storage performance of NaNbO3 based multilayered capacitors

2021 ◽  
Author(s):  
Li-Feng Zhu ◽  
Yongke Yan ◽  
Haoyang Leng ◽  
Xiaotian Li ◽  
Li-Qian Cheng ◽  
...  
Keyword(s):  
Energy Storage ◽  
Grain Refinement ◽  
Relaxor Behavior ◽  
Storage Performance ◽  
Multilayer Capacitors

Energy-storage performances of NaNbO3 system were effectively enhanced by composition engineering inducing relaxor behavior and grain refinement. Excellent Wrec = 3.7 J cm−3 and η = 82.1% were achieved in the NN-0.04CZ-0.16BNT multilayer capacitors.

scholarly journals Enhanced energy storage performance and fatigue resistance of Mn-doped 0.7Na0.5Bi0.5TiO3–0.3Sr0.7Bi0.2TiO3 lead-free ferroelectric ceramics

2020 ◽  
pp. 1-10
Author(s):  
Jinbo Wang ◽  
Huiqing Fan
Keyword(s):  
Energy Storage ◽  
Fatigue Resistance ◽  
Dielectric Response ◽  
Lead Free ◽  
Ferroelectric Ceramics ◽  
Relaxor Behavior ◽  
Storage Performance ◽  
Energy Storage Properties ◽  
Mn Doped ◽  
Storage Properties

The validity of Mn element on enhanced energy storage performance and fatigue resistance of Mn-doped 0.7Na0.5Bi0.5TiO3–0.3Sr0.7Bi0.2TiO3 lead-free ferroelectric ceramics (BNT–BST–xMn) is certified by doping. The effects of Mn modification on the dielectric behavior, ferroelectric, energy storage properties, and AC impedance are comprehensively investigated. It is found that the average grain size of the ceramics modified by Mn additions is reduced slightly. Moreover, the relaxor properties are evidently enhanced with the increased Mn content. The AC impedance spectra can even better clarify the dielectric response and relaxor behavior. The results suggest that both of the dielectric response and relaxor behavior are determined by defects especially concentration of the oxygen vacancy. The superior energy storage properties are realized at x = 0.05 with an energy storage density (Wrec) of 1.33 J/cm3 as well as energy storage efficiency (η) of 86.2% at 100 kV/cm, accompanied with a superior thermal stability. BNT–BST–5Mn ceramics can maintain a stable energy storage performance within 106 fatigue cycles, indicating an excellent fatigue resistance.

Relaxor behavior and energy storage performance of ferroelectric PLZT thin films with different Zr/Ti ratios

2014 ◽  
Vol 40 (1) ◽  
pp. 557-562 ◽  
Author(s):  
Zhongqiang Hu ◽  
Beihai Ma ◽  
Shanshan Liu ◽  
Manoj Narayanan ◽  
Uthamalingam Balachandran
Keyword(s):  
Thin Films ◽  
Energy Storage ◽  
Relaxor Behavior ◽  
Storage Performance ◽  
Plzt Thin Films

Significantly enhanced energy storage performance of rare-earth-modified silver niobate lead-free antiferroelectric ceramics via local chemical pressure tailoring

2019 ◽  
Vol 7 (6) ◽  
pp. 1551-1560 ◽  
Author(s):  
Song Li ◽  
Hengchang Nie ◽  
Genshui Wang ◽  
Chenhong Xu ◽  
Ningtao Liu ◽  
...  
Keyword(s):  
Rare Earth ◽  
Energy Storage ◽  
Energy Density ◽  
Lead Free ◽  
Chemical Pressure ◽  
Storage Performance ◽  
Recoverable Energy

An ultrahigh recoverable energy density was achieved in rare-earth-modified silver niobate lead-free antiferroelectric ceramics via local chemical pressure tailoring.

scholarly journals Effect of Composition on Polarization Hysteresis and Energy Storage Ability of P(VDF-TrFE-CFE) Relaxor Terpolymers

Polymers ◽  
2021 ◽  
Vol 13 (8) ◽  
pp. 1343
Author(s):  
Yusra Hambal ◽  
Vladimir V. Shvartsman ◽  
Daniil Lewin ◽  
Chieng Huo Huat ◽  
Xin Chen ◽  
...  
Keyword(s):  
Energy Storage ◽  
Hysteresis Loops ◽  
Freezing Temperature ◽  
Relaxor Behavior ◽  
Ferroelectric State ◽  
Storage Performance ◽  
Relaxor State ◽  
A Charge ◽  
First Time ◽  
Discharge Efficiency

The temperature dependence of the dielectric permittivity and polarization hysteresis loops of P(VDF-TrFE-CFE) polymer films with different compositions are studied. Among them, the three compositions, 51.3/48.7/6.2, 59.8/40.2/7.3, and 70/30/8.1, are characterized for the first time. Relaxor behavior is confirmed for all studied samples. Increasing the CFE content results in lowering the freezing temperature and stabilizes the ergodic relaxor state. The observed double hysteresis loops are related to the field-induced transition to a ferroelectric state. The critical field corresponding to this transition varies with the composition and temperature; it becomes larger for temperatures far from the freezing temperature. The energy storage performance is evaluated from the analysis of unipolar polarization hysteresis loops. P(VDF-TrFE-CFE) 59.8/40.2/7.3 shows the largest energy density of about 5 J·cm−3 (at the field of 200 MV·m−1) and a charge–discharge efficiency of 63%, which iscomparable with the best literature data for the neat terpolymers.

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