Tailoring the transport and magnetic properties of Mn doped spinel FeCo2O4 and their impact on energy storage properties: A new strategy to improve storage performance

2021 ◽  
Vol 44 ◽  
pp. 103361
Author(s):  
Milan Singh ◽  
Brahma Prakash Dubey ◽  
Asit Sahoo ◽  
K L Yadav ◽  
Yogesh Sharma
Keyword(s):  
Magnetic Properties ◽  
Energy Storage ◽  
Storage Performance ◽  
New Strategy ◽  
Energy Storage Properties ◽  
Mn Doped ◽  
Storage Properties

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.

Extraordinary energy storage performance and thermal stability in sodium niobate-based ceramics modified by the ion disorder and stabilized antiferroelectric orthorhombic R phase

2021 ◽  
Author(s):  
Ruirui Kang ◽  
Zepeng Wang ◽  
Weijie Yang ◽  
Xiaopei Zhu ◽  
Peng Shi ◽  
...  
Keyword(s):  
Energy Storage ◽  
Electric Vehicles ◽  
High Performance ◽  
Hybrid Electric Vehicles ◽  
Sodium Niobate ◽  
Storage Efficiency ◽  
Storage Performance ◽  
Energy Storage Properties ◽  
Energy Storage Efficiency ◽  
Storage Properties

Developing high-performance dielectric capacitors is essential to meet the growing demands of hybrid electric vehicles and high-power applications. The energy storage efficiency and the temperature-variant energy storage properties should be...

Dielectric and energy storage properties of PVDF/Nd-BaTiO3@Al2O3 composite films

2019 ◽  
Vol 12 (03) ◽  
pp. 1950034 ◽  
Author(s):  
Long He ◽  
Jing Wang ◽  
Zhong Yang ◽  
Kongjun Zhu ◽  
Chaoyong Deng
Keyword(s):  
Energy Storage ◽  
Polyvinylidene Fluoride ◽  
Composite Films ◽  
Shell Structures ◽  
Storage Performance ◽  
Al2o3 Composite ◽  
Great Suppression ◽  
Energy Storage Properties ◽  
Discharged Energy Density ◽  
Storage Properties

Flexible Nd-doped BaTiO3@Al2O3/polyvinylidene fluoride (PVDF) composites have been successfully developed. With the reaction temperature of 70∘C, Nd-doped BaTiO3@Al2O3 particles display uniform core–shell structures and disperse well in the PVDF matrix. Due to the benign dielectric properties of Nd-doped BaTiO3 and great suppression of the Al2O3 coating on the leakage current and dielectric loss, the Nd-doped BaTiO3@Al2O3/PVDF composites with different Nd-doped BaTiO3@Al2O3 filling ratios (0–4[Formula: see text]vol.%) exhibit relatively good dielectric and energy storage performance. Among them, the maximum discharged energy density of 8.6[Formula: see text]J/cm3 was achieved in the composite with 1[Formula: see text]vol.% Nd-doped BaTiO3@Al2O3 loading.

Relaxor/antiferroelectric composites: a solution to achieve high energy storage performance in lead-free dielectric ceramics

2020 ◽  
Vol 8 (17) ◽  
pp. 5681-5691 ◽  
Author(s):  
Pengyuan Fan ◽  
Shan-Tao Zhang ◽  
Jiwen Xu ◽  
Jiadong Zang ◽  
Chanatip Samart ◽  
...  
Keyword(s):  
Energy Storage ◽  
High Energy ◽  
Lead Free ◽  
Storage Performance ◽  
Energy Storage Properties ◽  
Dielectric Ceramics ◽  
Storage Properties ◽  
High Energy Storage

Compared with the relaxor with pinched P–E loops, the relaxor/antiferroelectric (RE/AFE) composites have narrower and oblique curves, proving the design of RE/AFE is an effective method to improve the energy storage properties of dielectric ceramics.

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