通过纳米结构设计和晶体取向调整BaTiO3-CeO2无铅薄膜的储能性能

IF 3.6 2区物理与天体物理 Q2 PHYSICS, APPLIED

Applied Physics Letters Pub Date : 2025-10-06 DOI:10.1063/5.0294093

Zhengyang Kong, Yufan Guo, Zhen Huang, Kun Han, Liqiang Xu

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引用次数: 0

摘要

弛豫铁电体在高性能能量存储应用，特别是在小型化电子设备和电力系统中具有广阔的应用前景。本文研究了CeO2掺杂对（1−x）BaTiO3−xCeO2[(1−x)BT−xC, 0.0≤x≤0.5]薄膜结构和极化行为的影响。我们的研究结果表明，将CeO2掺入BaTiO3基体中可以诱导化学和结构的非均质性，从而有效地抑制滞后性，使得在Nb-SrTiO3（001）衬底上生长的0.7BT-0.3C薄膜的储能密度Ue高达~ 37.6 J/cm3，效率η高达~ 80%。取向控制进一步改善了储能性能，在(110)-和（111）取向的Nb-SrTiO3衬底上生长的0.7BT-0.3C薄膜的Ue分别提高了44.8和46.8 J/cm3。频率和热稳定性分析表明，纳米结构的batio3基薄膜在20 Hz至10 kHz的宽频率范围和25至160℃的温度范围内保持稳定的储能性能。这些发现表明纳米结构工程和取向控制在提高batio3基薄膜的储能性能方面具有潜在的应用前景。

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Tailoring energy storage performance of BaTiO3–CeO2 lead-free films via nanostructure design and crystalline orientation

Relaxor ferroelectrics are promising for high-performance energy storage applications, particularly in miniaturized electronic devices and power systems. Herein, we investigate the influence of CeO2 doping on the structural and polarization behavior of (1 − x)BaTiO3−xCeO2 [(1 − x)BT−xC, 0.0 ≤ x ≤ 0.5] films. Our results show that the incorporation of CeO2 into BaTiO3 matrix induces chemical and structural heterogeneity, which effectively suppresses hysteresis, achieving a large energy storage density Ue of ∼37.6 J/cm3 and a high efficiency η of ∼80% for 0.7BT-0.3C films grown on Nb-SrTiO3 (001) substrates. The orientation control further refined the energy storage properties, with 0.7BT-0.3C films grown on (110)- and (111)-oriented Nb-SrTiO3 substrates exhibiting improved Ue of 44.8 and 46.8 J/cm3. The frequency and thermal stability analyses revealed that the nanostructured BaTiO3-based films maintained stable energy storage performance across a wide frequency range from 20 Hz to 10 kHz, and temperature range from 25 to 160 °C. These findings suggest the potential of nanostructure engineering and orientation control in improving the energy storage performance of BaTiO3-based films for advanced applications.

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来源期刊

Applied Physics Letters 物理-物理：应用

CiteScore

6.40

自引率

10.00%

发文量

1821

审稿时长

1.6 months

期刊介绍： Applied Physics Letters (APL) features concise, up-to-date reports on significant new findings in applied physics. Emphasizing rapid dissemination of key data and new physical insights, APL offers prompt publication of new experimental and theoretical papers reporting applications of physics phenomena to all branches of science, engineering, and modern technology. In addition to regular articles, the journal also publishes invited Fast Track, Perspectives, and in-depth Editorials which report on cutting-edge areas in applied physics. APL Perspectives are forward-looking invited letters which highlight recent developments or discoveries. Emphasis is placed on very recent developments, potentially disruptive technologies, open questions and possible solutions. They also include a mini-roadmap detailing where the community should direct efforts in order for the phenomena to be viable for application and the challenges associated with meeting that performance threshold. Perspectives are characterized by personal viewpoints and opinions of recognized experts in the field. Fast Track articles are invited original research articles that report results that are particularly novel and important or provide a significant advancement in an emerging field. Because of the urgency and scientific importance of the work, the peer review process is accelerated. If, during the review process, it becomes apparent that the paper does not meet the Fast Track criterion, it is returned to a normal track.