Dielectric property and energy storage performance enhancement for iron niobium based tungsten bronze ceramic

Feng, Wenbin; Cheng, Lilin; Hua, Xiu‐Ni; Chen, Xin; Zhang, Hui; Duan, Hai‐Bao

doi:10.1039/d2ra05403e

Cited by 14 publications

(3 citation statements)

References 51 publications

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“…It is noteworthy that the sample consistently exhibits slender P–E loops thanks to its robust thermal stability, the decrease in W rec and η remains below 3 and 4%, respectively, throughout the tested temperature range. In Figure i, a comparison of W rec and η between KBBNTP-2T GCs and various other tungsten bronze ceramics and glass ceramics is presented. − ,− Figure S13 also shows the stability of the KBBNTP-2T GCs sample in terms of different frequencies and cycle numbers. It can be seen that this sample shows a certain degree of stability.…”

Section: Resultsmentioning

confidence: 99%

Engineering Phase Separation in Niobate Glass through Ab Initio Molecular Dynamics for Enhanced Energy Storage Performance and Unprecedented Thermal Stability in Niobate-Based Glass Ceramics

Chen,

Wang,

Zhang

et al. 2024

ACS Appl. Mater. Interfaces

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The advancement of lead-free glass ceramics (GCs) possessing appropriate energy storage characteristics is crucial for the renewable energy and electronics industry. In this study, we synthesized lead-free GCs predominantly composed of the tungsten bronze phase, Ba 3.3 Nb 10 O 28.3 . Ab initio molecular dynamics initially reveal nonuniform distribution within the Ba/Nb−O regions in niobite glassy melts, offering valuable insights for the subsequent crystallization process. The proposal of a B-site engineering strategy is suggested, which entails the concurrent reduction of grain size and augmentation of the band gap in tungsten bronze GCs doped with Ta. This approach results in a substantial enhancement of the dielectric breakdown strength (BDS). Phase-field simulations have indicated that the refinement of grain sizes plays a pivotal role in augmenting the local electric field distribution and breakdown path, thereby contributing to the enhancement of BDS. As a consequence of these modifications, a notably high recoverable energy density (W rec ) of 5.23 J/cm 3 can be achieved, accompanied by an ultrahigh efficiency (η) of 94%, and superior thermal stability in energy storage. These outcomes are particularly evident in the case of 2 mol % Ta 2 O 5 -doped P 2 O 5 −K 2 O−BaO−Bi 2 O 3 −TeO 2 − Nb 2 O 5 (PKBBTN-T) GCs, where the W rec and η can be determined to be 2.87 ± 3% J/cm 3 and 95.46 ± 4%, respectively, over a temperature range spanning from 20 to 150 °C. Additionally, this specimen exhibits an exceptionally high discharge energy density (W dis ) of 4.01 J/cm 3 . This comprehensive investigation, comprising experimental and theoretical analyses, establishes an effective pathway and paradigm for the development of dielectric materials with ultrahigh energy storage properties.

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Section: Resultsmentioning

confidence: 99%

Engineering Phase Separation in Niobate Glass through Ab Initio Molecular Dynamics for Enhanced Energy Storage Performance and Unprecedented Thermal Stability in Niobate-Based Glass Ceramics

Chen,

Wang,

Zhang

et al. 2024

ACS Appl. Mater. Interfaces

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“…6(e). [2][3][4]10,13,16,18,19,[29][30][31][32][33][34][35][36][37][38][39][40]55 Furthermore, this ceramic shows a leading position in terms of stored/released energy per gram, and the parameter W rec /r (density) was subsequently introduced as a gure of merit to assess the lightweight capability. Ceramics reported in recent publications and this work are compared in terms of unit volume (W rec ) and unit mass (W rec /r) in Fig.…”

Section: Resultsmentioning

confidence: 99%

Achieving high energy density/efficiency in light-metal-element-rich relaxor ferroelectric ceramics by annihilating volatile Schottky defects

Lou,

Bao,

Chai

et al. 2024

J. Mater. Chem. A

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“…SBN finds application in electro-optical, acousto-optical, photorefractive, and nonlinear optical areas [8,9]. Moreover materials with the TTB structure, including SBN, are also promising in energy storage [10][11][12]. The use of alloying elements makes it possible to vary TTB material properties over a wide range [13].…”

Section: Introductionmentioning

confidence: 99%

Obtaining, crystal structure and nanostructure of Ba₂NdFeNb₄O₁₅ heteroepitaxial films fabricated by RF sputtering on MgO(001) substrates

Stryukov,

Pavlenko,

Matyash

et al. 2023

Phys. Scr.

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The high quality Ba2NdFeNb4O15 epitaxial films with thicknesses varying from 10 nm to 1μm have been fabricated by RF cathode sputtering. The films were characterized by the formation of orientational domains with 18.4° in-plane rotation and tetragonal unit cell. The films have a smooth surface, while the presence of orientational domains does not manifest itself in any way on the surface relief. The obtained films have no magnetic response due to the absence of magnetic inclusions of barium hexaferrite. The absence of any impurities has been confirmed by X-ray diffraction, atomic force microscopy and energy dispersive elemental analysis.

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Dielectric property and energy storage performance enhancement for iron niobium based tungsten bronze ceramic

Abstract: Lead free Sr3SmNa2Fe0.5Nb9.5O30 ceramic was synthesized and characterized, and high total energy storage density, recoverable energy storage density, energy storage efficiency and good thermal stability are synchronously achieved.

Cited by 14 publications

References 51 publications

Engineering Phase Separation in Niobate Glass through Ab Initio Molecular Dynamics for Enhanced Energy Storage Performance and Unprecedented Thermal Stability in Niobate-Based Glass Ceramics

Engineering Phase Separation in Niobate Glass through Ab Initio Molecular Dynamics for Enhanced Energy Storage Performance and Unprecedented Thermal Stability in Niobate-Based Glass Ceramics

Achieving high energy density/efficiency in light-metal-element-rich relaxor ferroelectric ceramics by annihilating volatile Schottky defects

Obtaining, crystal structure and nanostructure of Ba₂NdFeNb₄O₁₅ heteroepitaxial films fabricated by RF sputtering on MgO(001) substrates

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Dielectric property and energy storage performance enhancement for iron niobium based tungsten bronze ceramic

Abstract: Lead free Sr3SmNa2Fe0.5Nb9.5O30 ceramic was synthesized and characterized, and high total energy storage density, recoverable energy storage density, energy storage efficiency and good thermal stability are synchronously achieved.

Cited by 14 publications

References 51 publications

Engineering Phase Separation in Niobate Glass through Ab Initio Molecular Dynamics for Enhanced Energy Storage Performance and Unprecedented Thermal Stability in Niobate-Based Glass Ceramics

Engineering Phase Separation in Niobate Glass through Ab Initio Molecular Dynamics for Enhanced Energy Storage Performance and Unprecedented Thermal Stability in Niobate-Based Glass Ceramics

Achieving high energy density/efficiency in light-metal-element-rich relaxor ferroelectric ceramics by annihilating volatile Schottky defects

Obtaining, crystal structure and nanostructure of Ba2NdFeNb4O15 heteroepitaxial films fabricated by RF sputtering on MgO(001) substrates

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Obtaining, crystal structure and nanostructure of Ba₂NdFeNb₄O₁₅ heteroepitaxial films fabricated by RF sputtering on MgO(001) substrates