A Multifunctional High-Entropy Perovskite Ceramics with Enhanced Energy Storage and Photoluminescence Properties

IF 3.6 4区工程技术 Q3 ENERGY & FUELS

Energy technology Pub Date : 2025-04-26 DOI:10.1002/ente.202401824

Qiang He, Dongdong Meng, Wenhui Ye, Yu Han, Kepi Chen, Jingkai Nie, Zhixiang Zhu, Shaoxiong Zhou

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Abstract

High-entropy perovskite ceramics have become a topic of interest due to their unique properties and compositional versatility. This study pioneers the development of multifunctional high-entropy perovskite ceramics by incorporating the rare-earth element samarium (Sm) into the (Bi_0.4Na_0.2K_0.2Ba_0.2)TiO₃ matrix. The introduction of Sm³⁺ increases the configurational entropy and introduces photoluminescence activation centers. Our results show that (Bi_0.4−xSm_xNa_0.2K_0.2Ba_0.2)TiO₃ ceramics with x ≤ 0.12 retain pure perovskite phase and exhibit enhanced dielectric relaxation properties. The presence of Sm³⁺ ions disrupts the long-range ferroelectric order, resulting in lower maximum polarization and remanent polarization. In particular, the ceramic sample with x = 0.08 exhibits exceptional energy storage and photoluminescence properties. It achieves a recoverable energy storage density of 1.64 J cm⁻³ and an efficiency (η) of 79.2% under a low electric field of 180 kV cm⁻¹. These properties position the material as a promising candidate for applications in electro-optical devices.

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具有增强储能和光致发光性能的多功能高熵钙钛矿陶瓷

高熵钙钛矿陶瓷由于其独特的性能和成分的多功能性而成为人们感兴趣的话题。本研究通过将稀土元素钐（Sm）掺入（Bi0.4Na0.2K0.2Ba0.2）TiO3基体中，开创了多功能高熵钙钛矿陶瓷的发展。Sm3+的引入增加了构型熵并引入了光致发光活化中心。结果表明，x≤0.12的（Bi0.4−xSmxNa0.2K0.2Ba0.2）TiO3陶瓷保留了纯钙钛矿相，并表现出增强的介电弛豫性能。Sm3+离子的存在破坏了长程铁电秩序，导致最大极化和剩余极化降低。特别是，x = 0.08的陶瓷样品表现出优异的储能和光致发光性能。在180 kV cm−1的低电场条件下，可回收储能密度为1.64 J cm−3，效率（η）为79.2%。这些特性使该材料成为光电器件应用的有前途的候选者。

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来源期刊

Energy technology ENERGY & FUELS-

CiteScore

7.00

自引率

5.30%

发文量

审稿时长

1.3 months

期刊介绍： Energy Technology provides a forum for researchers and engineers from all relevant disciplines concerned with the generation, conversion, storage, and distribution of energy. This new journal shall publish articles covering all technical aspects of energy process engineering from different perspectives, e.g., new concepts of energy generation and conversion; design, operation, control, and optimization of processes for energy generation (e.g., carbon capture) and conversion of energy carriers; improvement of existing processes; combination of single components to systems for energy generation; design of systems for energy storage; production processes of fuels, e.g., hydrogen, electricity, petroleum, biobased fuels; concepts and design of devices for energy distribution.