Engineering multi-ion doping by entropy for high energy storage density with high efficiency in amorphous thin film

IF 5.1 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS Ceramics International Pub Date : 2024-07-05 DOI:10.1016/j.ceramint.2024.07.020

Zijiang Yang, Rui Huang, Jian Zhang, Tianyu Zhang, Cheng Tao, Hua Hao, Zhonghua Yao, Hanxing Liu, Minghe Cao

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Abstract

In the field of stored energy materials, lead-free amorphous thin films have the advantages of high breakdown strength, excellent stability, environmental protection and pollution-free, and are a very competitive energy storage material. However, the difficulty of simultaneous optimization of polarization and breakdown strength has always been a difficulty in improving the energy storage properties of amorphous thin films. Entropy can be used to design multi-ion doping to improve the energy storage performance of amorphous film. Amorphous films with different entropy are prepared by sol-gel method doped with 50% Zr⁴⁺ and 5%, 10%, 15%, 20% Bi(Mn_0.5Ti_0.5)O₃. The Bi_0.1Ba_0.85Sr_0.05Mn_0.05Ti_0.45Zr_0.5O₃ amorphous thin film prepared at medium entropy (S = 1.37) has a recoverable energy storage density of 107.4 J cm^-3 at 8.42 MV cm^-1, and the energy storage efficiency is 93.9%. Under the interaction of multiple elements, entropy design can give full play to the advantages of composite effects, improve breakdown field strength and energy storage efficiency, and is a new method to enhance energy storage performance.

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利用熵工程多离子掺杂技术实现非晶薄膜的高能量储存密度和高效率

在储能材料领域，无铅非晶薄膜具有击穿强度高、稳定性好、环保无污染等优点，是一种极具竞争力的储能材料。然而，极化和击穿强度难以同时优化一直是改善非晶薄膜储能性能的难点。熵可用于设计多离子掺杂，以改善非晶薄膜的储能性能。本研究采用溶胶-凝胶法制备了掺杂50% Zr4+和5%、10%、15%、20% Bi(Mn0.5Ti0.5)O3 的不同熵值的非晶薄膜。在中等熵（S = 1.37）条件下制备的 Bi0.1Ba0.85Sr0.05Mn0.05Ti0.45Zr0.5O3 非晶薄膜在 8.42 MV cm-1 时的可回收储能密度为 107.4 J cm-3，储能效率为 93.9%。在多元素相互作用下，熵设计能充分发挥复合效应的优势，提高击穿场强和储能效率，是一种提高储能性能的新方法。

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来源期刊

Ceramics International 工程技术-材料科学：硅酸盐

CiteScore

9.40

自引率

15.40%

发文量

4558

审稿时长

25 days

期刊介绍： Ceramics International covers the science of advanced ceramic materials. The journal encourages contributions that demonstrate how an understanding of the basic chemical and physical phenomena may direct materials design and stimulate ideas for new or improved processing techniques, in order to obtain materials with desired structural features and properties. Ceramics International covers oxide and non-oxide ceramics, functional glasses, glass ceramics, amorphous inorganic non-metallic materials (and their combinations with metal and organic materials), in the form of particulates, dense or porous bodies, thin/thick films and laminated, graded and composite structures. Process related topics such as ceramic-ceramic joints or joining ceramics with dissimilar materials, as well as surface finishing and conditioning are also covered. Besides traditional processing techniques, manufacturing routes of interest include innovative procedures benefiting from externally applied stresses, electromagnetic fields and energetic beams, as well as top-down and self-assembly nanotechnology approaches. In addition, the journal welcomes submissions on bio-inspired and bio-enabled materials designs, experimentally validated multi scale modelling and simulation for materials design, and the use of the most advanced chemical and physical characterization techniques of structure, properties and behaviour. Technologically relevant low-dimensional systems are a particular focus of Ceramics International. These include 0, 1 and 2-D nanomaterials (also covering CNTs, graphene and related materials, and diamond-like carbons), their nanocomposites, as well as nano-hybrids and hierarchical multifunctional nanostructures that might integrate molecular, biological and electronic components.