Strongly enhancing the energy storage properties and stability of amorphous BaTiO3 thin films via ions doping

IF 5.3 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Scripta Materialia Pub Date : 2025-05-07 DOI:10.1016/j.scriptamat.2025.116751

Ruiling Chang , Zhonghua Yao , Yutong Xing , Jun Wang , Hua Hao , Minghe Cao , Hanxing Liu

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Abstract

Amorphous thin films with high power density and breakdown strength satisfy the needs of advanced power electronic systems. Nonetheless, improving the energy storage density of amorphous films is critical for addressing the growing demand for electricity. We apply high spontaneous polarization BaTiO₃ as the main component to make (1-x)Ba(Ti_0.99Mn_0.02)O₃-xBiFeO₃((1-x)BTM-xBF) thin films. Doping BiFeO₃ (BF) synergistically boosts polarization. The introduction of amorphous phases and Mn ions enhances the breakdown strength. The results demonstrate that, at x = 0.10, the film can achieve both a high efficiency of 80.3 % and an excellent energy storage density of 111.3 J cm^-3. Moreover, the film has a strong thermal stability within a broad range of 20 to 160 °C, as well as the cycling reliability is as high as 10⁵ times. The present study offers a practical approach to develop film capacitors with outstanding energy storage capabilities.

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离子掺杂可显著提高非晶BaTiO3薄膜的储能性能和稳定性

非晶薄膜具有较高的功率密度和击穿强度，满足了先进电力电子系统的需要。尽管如此，提高非晶薄膜的能量储存密度对于解决日益增长的电力需求至关重要。我们采用高自发极化BaTiO3作为主要成分制备了（1-x）Ba(Ti0.99Mn0.02)O3-xBiFeO3（(1-x)BTM-xBF）薄膜。掺入BiFeO3 （BF）可协同增强极化。非晶相和Mn离子的引入提高了材料的击穿强度。结果表明，当x = 0.10时，薄膜的效率为80.3%，储能密度为111.3 J cm-3。此外，该薄膜在20 ~ 160℃的宽范围内具有很强的热稳定性，循环可靠性高达105次。本研究为开发具有优异储能能力的薄膜电容器提供了一种实用的方法。

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来源期刊

Scripta Materialia 工程技术-材料科学：综合

CiteScore

11.40

自引率

5.00%

发文量

581

审稿时长

34 days

期刊介绍： Scripta Materialia is a LETTERS journal of Acta Materialia, providing a forum for the rapid publication of short communications on the relationship between the structure and the properties of inorganic materials. The emphasis is on originality rather than incremental research. Short reports on the development of materials with novel or substantially improved properties are also welcomed. Emphasis is on either the functional or mechanical behavior of metals, ceramics and semiconductors at all length scales.