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...

A novel metal–organic framework derived carbon nanoflower with effective electromagnetic microwave absorption and high-performance electrochemical energy storage properties

2021 ◽  
Author(s):  
Liwei Zhu ◽  
Ning Liu ◽  
Xincheng Lv ◽  
Ziqiu Zhang ◽  
Liangmin Yu ◽  
...  
Keyword(s):  
Energy Storage ◽  
Microwave Absorption ◽  
High Performance ◽  
Metal Organic Framework ◽  
Electrochemical Energy Storage ◽  
Carbon Nanomaterial ◽  
Energy Storage Properties ◽  
Metal Organic ◽  
Storage Properties ◽  
Electrochemical Energy

A novel carbon nanomaterial with unique morphology was prepared and proven to be an effective material for EMWA and electrochemical energy storage.

scholarly journals Effect of sintering temperature on the dielectric, ferroelectric and energy storage properties of SnO2-doped Bi0.5(Na0.8K0.2)0.5TiO3 lead-free ceramics

2020 ◽  
Vol 10 (04) ◽  
pp. 2050011
Author(s):  
Nguyen Truong-Tho ◽  
Le Dai Vuong
Keyword(s):  
Dielectric Constant ◽  
Energy Storage ◽  
Sintering Temperature ◽  
High Energy ◽  
Lead Free ◽  
Energy Storage Properties ◽  
Energy Storage Efficiency ◽  
High Dielectric ◽  
Storage Properties ◽  
High Energy Storage

Sintered lead-free [Formula: see text]([Formula: see text][Formula: see text]([Formula: see text][Formula: see text]O3 ceramics (BNKTS) have been fabricated via a solid-state reaction. The effect of sintering temperature on the structural, morphological, dielectric, ferroelectric and energy storage properties of BNKTS ceramics was investigated, and it was found that the electrical properties of the synthesized ceramics increased with the increase in the sintering temperature, and the highest values were achieved at [Formula: see text]C. The ceramics sintered at the optimized temperature of [Formula: see text]C exhibited the best physical, dielectric, ferroelectric and energy storage properties, namely, high density (the relative density, [Formula: see text][Formula: see text]g.cm[Formula: see text], approximate to 96.7% of the theoretical value), high densification factor ([Formula: see text]), high dielectric constant ([Formula: see text]), low dielectric loss (tan[Formula: see text]), highest dielectric constant ([Formula: see text]), high remanent polarization ([Formula: see text]C.cm[Formula: see text], high coercive field ([Formula: see text][Formula: see text]kV/cm), high energy storage density (0.12[Formula: see text]J/cm[Formula: see text], and high energy storage efficiency (41.7% at 46.3[Formula: see text]kV/cm).

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.

Reverse synthesis of star anise-like cobalt doped Cu-MOF/Cu2+1O hybrid materials based on a Cu(OH)2 precursor for high performance supercapacitors

2019 ◽  
Vol 7 (8) ◽  
pp. 3815-3827 ◽  
Author(s):  
Xueying Cao ◽  
Liang Cui ◽  
Bingping Liu ◽  
Ying Liu ◽  
Dedong Jia ◽  
...  
Keyword(s):  
Energy Storage ◽  
Hybrid Materials ◽  
High Performance ◽  
Electrochemical Energy Storage ◽  
Star Anise ◽  
Energy Storage Properties ◽  
Novel Strategy ◽  
Storage Properties ◽  
Electrochemical Energy

A vertically oriented star anise-like MOF-based material is prepared by a novel strategy using Cu(OH)2 as the template and precursor, which shows promising electrochemical energy storage properties.

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.

High-performance BaZr0.35Ti0.65O3 thin film capacitors with ultrahigh energy storage density and excellent thermal stability

2018 ◽  
Vol 6 (26) ◽  
pp. 12291-12297 ◽  
Author(s):  
Zhongshuai Liang ◽  
Ming Liu ◽  
Chunrui Ma ◽  
Lvkang Shen ◽  
Lu Lu ◽  
...  
Keyword(s):  
Energy Storage ◽  
High Performance ◽  
Harsh Environments ◽  
Energy Storage Density ◽  
Ultrahigh Energy ◽  
Excellent Thermal Stability ◽  
Storage Density ◽  
Thin Film Capacitors ◽  
Energy Storage Properties ◽  
Storage Properties

High performance Pb-free Ba(Zr0.35Ti0.65)O3 film capacitors exhibit outstanding energy storage properties over a wide temperature range from −100 °C to 200 °C, demonstrating a great foreground for utilization in equipment working in harsh environments.

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.

Ultra-high energy storage performance with mitigated polarization saturation in lead-free relaxors

2019 ◽  
Vol 7 (14) ◽  
pp. 8573-8580 ◽  
Author(s):  
Letao Yang ◽  
Xi Kong ◽  
Zhenxiang Cheng ◽  
Shujun Zhang
Keyword(s):  
Energy Storage ◽  
High Energy ◽  
Lead Free ◽  
Ultra High Energy ◽  
Storage Performance ◽  
Energy Storage Properties ◽  
Polarization Saturation ◽  
Storage Properties ◽  
High Energy Storage

A strategy of mitigating polarization saturation is applied to enhance the energy storage properties of Sn-modified NBT–ST relaxor ceramics.

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