Journal of Materiomics最新文献_第10页

Ultrahigh energy storage performance via defect engineering in Sr0.7Bi0.2TiO3 lead-free relaxor ferroelectrics 通过 Sr0.7Bi0.2TiO3 无铅弛豫铁电体中的缺陷工程实现超高储能性能

IF 8.4 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Journal of Materiomics

Pub Date : 2025-04-21 DOI: 10.1016/j.jmat.2025.101065

Yutao Luo , Tianyang Zheng , Song Liu , Yunfei Liu , Yinong Lyu , Jin Luo

With the development of advanced electronic memory and the advocacy of environmental friendliness, lead-free relaxor ferroelectric capacitors with slim hysteresis loops have received great attention in high power energy storage applications. However, various emerging defects in Sr_0.7Bi_0.2TiO₃ based relaxor ferroelectric films can result in inferior energy storage performance. In this work, Mn doping is utilized to modify the defects caused by the excessive Bi compensation in the Sr_0.7Bi_0.2TiO₃ relaxor ferroelectric thin films. Those Mn doped Sr_0.7Bi_0.2TiO₃ thin films exhibits significantly improved recoverable energy storage density by more than one order of magnitude with an ultrahigh energy storage density (126 J/cm³). By analyzing the change of the chemical environment and using the scanning transmission electron microscopy, we reveal these improved energy storage performances arises from the formation of defect dipoles of Mn²⁺ at B site with oxygen vacancies, suppressing the volume of oxygen vacancies and titanium vacancies simultaneously, and the slush-like “single domain” structure with fluctuated B-site cation displacements stabilized and confined in a single nano-sized crystal grain. This chemical modification strategy in this work can serve as a regular approach to suppress the defects and improve the energy storage performance in ferroelectric thin films with volatile elements.

随着先进电子存储技术的发展和对环境友好的倡导，具有细磁滞回线的无铅弛豫铁电电容器在大功率储能领域的应用受到了广泛的关注。然而，Sr0.7Bi0.2TiO3基弛豫铁电薄膜中出现的各种缺陷导致其储能性能较差。本文采用Mn掺杂的方法对Sr0.7Bi0.2TiO3弛豫铁电薄膜中由于Bi补偿过多而产生的缺陷进行了修正。Mn掺杂的Sr0.7Bi0.2TiO3薄膜的可回收储能密度显著提高了一个数量级以上，达到了126 J/cm3的超高储能密度。通过对化学环境变化的分析和扫描透射电镜的分析，我们发现这些储能性能的提高是由于Mn2+在具有氧空位的B位形成缺陷偶极子，同时抑制了氧空位和钛空位的体积，并且具有波动的B位阳离子位移的泥状“单畴”结构稳定并被限制在单个纳米晶粒中。本研究的化学改性策略可作为抑制含挥发性元素铁电薄膜缺陷和提高其储能性能的常规方法。

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引用次数: 0

Electrocaloric effects in ferroelectrics and multiferroics from first principles 从第一原理看铁电体和多铁电体的热效应

IF 8.4 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Journal of Materiomics

Pub Date : 2025-04-19 DOI: 10.1016/j.jmat.2025.101063

Zhijun Jiang , Xueqing Wan , Bin Xu , Jorge Íñiguez-González , Laurent Bellaiche

The electrocaloric (EC) effect characterizes the change in temperature or entropy of a material under the application of an external electric field. Ferroelectric and multiferroic materials have attracted considerable interest due to their potential for efficient solid-state refrigeration in a broad range of applications. In this review, we present recent applications of first-principles-based effective Hamiltonian, second-principles method, and spin Heisenberg model to study the EC effect in ferroelectrics, relaxor ferroelectrics, and multiferroic materials. Specifically, these methods are used to investigate the EC effect in perovskite ferroelectrics Pb(Zr_0.4Ti_0.6)O₃, (Ba_0.5Sr_0.5)TiO₃, PbTiO₃, BaTiO₃ and PbTiO₃/SrTiO₃ superlattices, relaxor ferroelectrics Ba(Zr, Ti)O₃ and Pb(Mg, Nb)O₃, as well as rare-earth-substituted BiFeO₃, BiCoO₃ and BiFeO₃ multiferroics, and Nd-substituted BiFeO₃ antiferroelectric solid solutions. Large electrocaloric responses are predicted in some of these compounds. In addition, we review the phenomenological models that can be used to analyze and understand these EC effect results.

电热（EC）效应表征了材料在外加电场作用下的温度或熵的变化。铁电和多铁材料由于其在广泛的应用中具有高效固态制冷的潜力而引起了相当大的兴趣。本文综述了基于第一性原理的有效哈密顿量、第二原理方法和自旋海森堡模型在铁电体、弛豫铁电体和多铁材料中研究EC效应的最新应用。具体来说，这些方法用于研究钙钛矿铁电体Pb(Zr0.4Ti0.6)O3, (Ba0.5Sr0.5)TiO3, PbTiO3， BaTiO3和PbTiO3/SrTiO3超晶格，弛豫铁电体Ba(Zr, Ti)O3和Pb(Mg, Nb)O3，以及稀土取代的BiFeO3， BiCoO3和BiFeO3多铁质和nd取代的BiFeO3反铁电固溶体中的EC效应。在这些化合物中，预计会有较大的电热反应。此外，我们回顾了可用于分析和理解这些EC效应结果的现象学模型。

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引用次数: 0

Enhanced spatial charge separation and gas adsorption in Bi2WO6 facet junction for efficient visible light-excited gas detection at room temperature 增强Bi2WO6面结的空间电荷分离和气体吸附，用于室温下有效的可见光激发气体检测

IF 8.4 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Journal of Materiomics

Pub Date : 2025-04-18 DOI: 10.1016/j.jmat.2025.101062

Yan Liang , Chunbo Ru , Hua Tang , Xiaojian Zhao , Lu Tang , Shenman Yao , Yong Yang

Enhancing the room temperature gas sensing capabilities of semiconductor sensors through light excitation has emerged as a prominent research focus in recent years. However, challenges such as the high photo-generated charges recombination rate and poor visible light absorption of representative semiconductor gas sensing materials have posed significant issues. To address these challenges, Aurivillius type Bi₂WO₆ with exceptional visible light absorption was chosen as the model material to explore facet junctions in semiconductor gas sensors for the first time. The experiment successfully achieved the self-construction of facet junctions in Bi₂WO₆ single crystal microplates, exposing both {001} and {010} facets. It was observed that the facet junction, with an optimal facets proportion, not only controlled gas adsorption but also facilitated the efficient separation of photo-generated charges across the anisotropic facets through surface band bending and internal fields, thus enabling the efficient detection of acetic acid under visible light LED excitation at room temperature. Through first-principle calculations, in-situ infrared spectroscopy and other spectroscopic techniques, the gas sensing mechanism was systematically elucidated. This study offers new insights into enhancing the gas sensing performance of light-excited semiconductor gas sensors through facet junction design. Moreover, it significantly enriches our understanding of the microscopic-scale gas sensing mechanisms.

利用光激发增强半导体传感器的室温气体传感能力是近年来的研究热点。然而，典型半导体气敏材料的高光生电荷复合率和可见光吸收差等挑战已经提出了重大问题。为了解决这些挑战，Aurivillius型Bi2WO6具有优异的可见光吸收能力，首次被选择作为模型材料来探索半导体气体传感器的面结。实验成功地在Bi2WO6单晶微孔板上实现了面结的自构建，同时暴露了{001}和{010}两个面。结果表明，具有最佳facet比例的facet结不仅控制了气体吸附，而且通过表面带弯曲和内部场促进了光产生电荷在各向异性facet上的有效分离，从而实现了室温下可见光LED激发下醋酸的高效检测。通过第一性原理计算、原位红外光谱等光谱技术，系统地阐明了气敏机理。该研究为通过面结设计提高光激发半导体气体传感器的气敏性能提供了新的见解。此外，它极大地丰富了我们对微观尺度气敏机理的理解。

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引用次数: 0

High quality CuInP2S6 single crystal for intrinsic electric property 高品质的CuInP2S6单晶具有本征电性能

IF 8.4 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Journal of Materiomics

Pub Date : 2025-04-18 DOI: 10.1016/j.jmat.2025.101067

Changjin Guo , Yu Tan , Jiajun Zhu , Jiyang Xie , Chengding Gu , Wanbiao Hu

What is the nature of the electric (dielectric/ferroelectric) properties of CuInP₂S₆ (CIPS)? CIPS, considered an emerging two-dimensional (2D) ferroelectric, has been well explored in various properties and applications. However, the most important and fundamental nature, i.e. dielectric/ferroelectric property, has been controversial, because high-quality CIPS samples are grossly deficient. In this work, single crystal CIPS is successfully synthesized by the chemical vapour transport method, which presents “high quality” in terms of high purity, excellent crystallinity, uniform composition, and defect-free structure etc. that are confirmed through comprehensive characterization techniques. With performing high-quality single crystal, we fully uncover the intrinsic electric properties of CIPS through accurately identifying the atomic arrangement, electron configuration, magnetic, dielectric, and ferroelectric properties that should reach a consensus on such a disputed CIPS material. These findings serve as a pivotal benchmark for a comprehensive understanding of the inherent electric characteristics of CIPS, offering valuable insights for its future modifications and applications in various applications.

CuInP2S6 （CIPS）的电（介电/铁电）性质是什么？CIPS被认为是一种新兴的二维（2D）铁电材料，在各种性质和应用方面得到了很好的探索。然而，最重要和最基本的性质，即介电/铁电性质，一直存在争议，因为高质量的CIPS样品严重缺乏。本研究成功地通过化学气相输运法合成了单晶CIPS，通过综合表征技术，证实了单晶CIPS在纯度高、结晶度好、成分均匀、结构无缺陷等方面具有“高品质”。通过制备高质量的单晶，通过对原子排列、电子排布、磁性、介电性和铁电性的准确识别，充分揭示了CIPS的内在电学性质，对这一有争议的CIPS材料应达成共识。这些发现是全面了解CIPS固有电特性的关键基准，为其未来的修改和在各种应用中的应用提供了有价值的见解。

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引用次数: 0

Reduced coercive field and enhanced ferroelectric polarization of Hf0.5Zr0.5O2 film through electric-field-assisted rapid annealing 电场辅助快速退火使Hf0.5Zr0.5O2薄膜的矫顽力场减小，铁电极化增强

IF 8.4 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Journal of Materiomics

Pub Date : 2025-04-16 DOI: 10.1016/j.jmat.2025.101061

Jiachen Li , Weijin Pan , Zhengxu Zhu , Hansheng Zhu , Yuchen Wang , Shengchun Shen , Yuewei Yin , Xiaoguang Li

Hafnium oxide–based ferroelectric materials emerged as promising candidates for constructing next-generation high-density memory devices due to their silicon compatibility. However, the high coercive field (E_c, typically exceeding 1.0 MV/cm) puts forward challenges to high operating voltage and limited endurance performance. To overcome these limitations, a strategy is utilized by applying an in-situ direct current electric field during rapid thermal process (RTP). This approach enables simultaneous reduction of coercive field and enhancement of ferroelectric polarization in Hf_0.5Zr_0.5O₂ (HZO). Notably, a record-low E_c (∼0.79 MV/cm) is achieved among atomic layer deposition-grown Zr-doped HfO₂ ferroelectric films, facilitating lower operation voltage, faster switching speed, and improved endurance characteristics. High-resolution transmission electron microscopy analysis reveals that the ferroelectric domains in samples through electric field assisted-RTP exhibit a relatively preferential out-of-plane orientation compared to normal RTP-treated samples, which is the underlying mechanism in reducing the coercive field and enhancing ferroelectric polarization. This study introduces a practical and effective method for optimizing the overall performance of HZO films, underscoring their potential for application in non-volatile memory technologies.

基于氧化铪的铁电材料由于其硅兼容性而成为构建下一代高密度存储器件的有希望的候选者。然而，高矫顽力场（Ec，通常超过1.0 MV/cm）对高工作电压和有限的持久性能提出了挑战。为了克服这些限制，采用了在快速热过程（RTP）中施加原位直流电场的策略。该方法可以使Hf0.5Zr0.5O2 （HZO）中矫顽力场的减小和铁电极化的增强同时发生。值得注意的是，在原子层沉积生长的掺杂zr的HfO2铁电薄膜中，实现了创纪录的低Ec (~ 0.79 MV/cm)，促进了更低的工作电压，更快的开关速度和改进的续航特性。高分辨率透射电镜分析表明，电场辅助rtp处理后样品的铁电畴相对于普通rtp处理样品表现出相对优先的面外取向，这是降低矫顽力场和增强铁电极化的潜在机制。本研究介绍了一种实用有效的方法来优化HZO薄膜的整体性能，强调了它们在非易失性存储技术中的应用潜力。

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引用次数: 0

A new catalytic merit for prediction catalytic potential of 2D materials in LiO2 batteries: Theoretical investigation and experimental identification 预测二维材料在Li-O2电池中催化电位的新催化优点：理论研究和实验鉴定

IF 8.4 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Journal of Materiomics

Pub Date : 2025-04-16 DOI: 10.1016/j.jmat.2025.101060

Geng Cheng , Wenpei Li , Chengyan Liu , Jie Gao , Jun-Liang Chen , Jianhua Zhou , Xiaoyang Wang , Lei Miao

Two-dimensional (2D) materials such as metal chalcogenides have great potential as cathode catalyst materials for lithium oxygen batteries (LOBs) due to their large specific surface area and stable chemical properties. However, thus far, due to the lack of theoretical prediction methods, huge load on catalytic synthesis and performance evaluation is concerned. Herein, we reported a theoretical method for 2D metal chalcogenides as catalysts for LOBs using first principles density functional theory (DFT) calculations. We extracted key parameters that affect the overpotential, including Li–X bond energy (X represents chalcogen elements) and catalyst lattice constant, and theoretically predicted the catalytic performance. The DFT calculation results indicate that MoS₂ with appropriate Li–X bond energy and lattice constant has the lowest theoretical overpotential, and its cyclic stability should be higher than other materials under the same conditions. Significantly, we experimentally validated the theoretical predictions presented above. The experimental results shows that pure MoS₂ with 2H phase can stably work for more than 220 cycles at a current density of 500 mA/g, and the actual overpotential is lower than other metal chalcogenides. This work provides a swift pathway to accelerate searching high performance catalytic in LOBs.

金属硫族化合物等二维（2D）材料具有比表面积大、化学性质稳定等优点，作为锂氧电池（lob）正极催化剂材料具有很大的潜力。然而，迄今为止，由于缺乏理论预测方法，对催化合成和性能评价造成了巨大的负担。本文报道了一种基于第一性原理密度泛函理论（DFT）计算的二维金属硫族化合物作为lob催化剂的理论方法。我们提取了影响过电位的关键参数，包括Li-X键能（X代表硫元素）和催化剂晶格常数，并从理论上预测了催化性能。DFT计算结果表明，具有合适的Li-X键能和晶格常数的MoS2具有最低的理论过电位，并且在相同条件下其循环稳定性应高于其他材料。值得注意的是，我们通过实验验证了上述理论预测。实验结果表明，纯2H相MoS2在500 mA/g电流密度下可稳定工作220次以上，实际过电位低于其他金属硫族化合物。这项工作为加速寻找lob中高效催化剂提供了一条快速途径。

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引用次数: 0

Laser-driven composite ceramic enabling superhigh-luminance white light 激光驱动复合陶瓷实现超高亮度白光

IF 8.4 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Journal of Materiomics

Pub Date : 2025-04-03 DOI: 10.1016/j.jmat.2025.101059

Rundong Tian , Tianliang Zhou , Rong-Jun Xie

Laser-remote activated phosphor (LARP) converted solid state lighting is now developing towards high power density and super-brightness, and phosphor ceramic converters with high efficiency, high thermal conductivity, acceptable transmittance and suitable spectra are thus required. Y₃Al₅O₁₂:Ce (YAG:Ce)-based ceramics are promising color converters to produce white light with a color temperature of 6000 K for vehicle headlamps, but the brightness and luminous efficiency are not well optimized. In this work, two series of Al₂O₃-YAG:Ce and Al₂O₃-(Gd,Y)AG:Ce transparent ceramics were fabricated by vacuum sintering, and their microstructure, thermal and optical properties were controlled by changing the Ce³⁺ or Al₂O₃ content as well the thickness of the ceramics. Both Al₂O₃Y_2.925Al₅O₁₂:Ce_0.0175 (AY0.0175) and Al₂O₃-(Gd_0.1Y_2.89)Al₅O₁₂:Ce_0.01 (AGY) ceramics containing 70% (in mass) Al₂O₃ show a luminance saturation threshold of 30.3 W/mm² and 38.4 W/mm², enabling to produce white light with a color temperature of 6000 K, luminous flux of 1928 lm and 3101 lm, luminous efficiency of 135.0 lm/W and 161.1 lm/W when pumped by blue laser diodes, respectively. This work provides a solution to finely control the composition, microstructure, and optical properties of transparent ceramics for super-high brightness laser-driven solid-state lighting.

激光远激活荧光粉（LARP）转换固态照明正朝着高功率密度和超亮度方向发展，因此需要具有高效率、高导热性、可接受的透过率和合适光谱的荧光粉陶瓷转换器。Y3Al5O12:Ce （YAG:Ce）基陶瓷是一种很有前途的颜色转换器，可以产生色温为6000 K的白光，用于汽车前照灯，但亮度和发光效率没有得到很好的优化。本文采用真空烧结法制备了Al2O3- yag:Ce和Al2O3-(Gd，Y)AG:Ce两系列透明陶瓷，通过改变陶瓷的Ce3+或Al2O3含量以及陶瓷的厚度来控制其显微结构、热性能和光学性能。含有70%（质量）Al2O3的Al2O3- y2.925 Al5O12:Ce0.0175 （AY0.0175）和Al2O3-(Gd0.1Y2.89)Al5O12:Ce0.01 （AGY）陶瓷的亮度饱和阈值分别为30.3 W/mm2和38.4 W/mm2，在蓝色激光二极管泵浦下可产生色温为6000 K的白光，光通量分别为1928 lm和3101 lm，发光效率分别为135.0 lm/W和161.1 lm/W。这项工作提供了一种解决方案，可以精细地控制透明陶瓷的组成、微观结构和光学性能，用于超高亮度激光驱动的固态照明。

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引用次数: 0

In-situ transformation of a perovskite oxide from irregular particles into nanosheets for active and durable solid oxide fuel cell cathodes 钙钛矿氧化物从不规则颗粒原位转化为纳米片，用于活性和耐用的固体氧化物燃料电池阴极

IF 8.4 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Journal of Materiomics

Pub Date : 2025-04-02 DOI: 10.1016/j.jmat.2025.101058

Shuai Ma , Shengli Pang , Xudong He , Hao Lou , Kaijie Xu , Yaozheng Qian , Fang Yang , Yi Zhuang , Xuyao Luo , Lianxu Xu , Yifei Gao , Peijie Zhang , Qiangsheng Xiao , Chonglin Chen

Solid oxide fuel cells (SOFCs) are of paramount importance for developing green and sustainable energy systems. However, achieving stable nanoscale cathode catalysts under their typically high operating temperatures, normally exceeding 600 °C, remains a significant challenge. By introducing a small amount of RuCl₃ into the cathode slurry, an in-situ transformation of the PrBaCo₂O_5+δ cathode catalyst can be induced from submicrometer-scale irregular particles into nanosheets during SOFC operation. These nanosheets feature a RuO₂-modified surface layer, resulting in substantial improvements in both catalytic activity and operational durability. At 750 °C and 0.7 V, SOFCs employing conventional cathode catalysts exhibit a 6.1% degradation in power density over 110 h, while those employing the nanosheet-structured catalysts achieve an 11.9% increase, ultimately stabilizing at a high-power density of 0.75 W/cm². This work presents a simple and scalable strategy for constructing high-performance nanocatalysts and deepens our theoretical understanding of catalyst nanostructuring for SOFC applications.

固体氧化物燃料电池（SOFC）对于开发绿色和可持续能源系统至关重要。然而，在通常超过 600 °C 的高工作温度下实现稳定的纳米级阴极催化剂仍然是一项重大挑战。通过在阴极浆料中引入少量 RuCl3，可在 SOFC 运行过程中将 PrBaCo2O5+δ 阴极催化剂从亚微米级不规则颗粒原位转变为纳米片。这些纳米片具有 RuO2 修饰的表面层，从而大大提高了催化活性和运行耐久性。在 750 °C 和 0.7 V 条件下，使用传统阴极催化剂的 SOFC 在 110 小时内功率密度下降了 6.1%，而使用纳米片结构催化剂的 SOFC 功率密度提高了 11.9%，最终稳定在 0.75 W/cm2 的高功率密度。这项工作为构建高性能纳米催化剂提供了一种简单且可扩展的策略，并加深了我们对 SOFC 应用催化剂纳米结构的理论理解。

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引用次数: 0

Regulating emission in Er doped silicate glass and fiber via coordination engineering 通过配位工程调节掺铒硅酸盐玻璃和光纤的发射

IF 8.4 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Journal of Materiomics

Pub Date : 2025-04-01 DOI: 10.1016/j.jmat.2025.101057

Yuqing Li , Yan Sun , Xin Wang , Fangling Jiang , Feimei Wang , Lu Deng , Xinyu Liu , Chunlei Yu , Lili Hu , Shubin Chen

L-band Er doped fiber (EDF) laser sources are in great demand for extending communication bandwidth. However, the gain performance is limited by the low emission cross section (σ_e) of Er³⁺ at wavelengths longer than 1590 nm. In our study, we revealed the mechanism of regulating Er emission behavior in silicate glass, and provided a linear model to predict the σ_e of Er-doped silicate glass with R² = 92.3%. The σ_e1600 was increased to 23.5 × 10⁻²² cm² through erbium coordination engineering. Results were elucidated using X-ray absorption fine structure (XAFS) spectra, molecular dynamics (MD) simulations and fluorescence. Furthermore, this work validates this model in Er doped silicate fibers and obtained >20 dB amplification in the range of 1585–1625 nm. This coordination engineering shows significant potential in applications of Er-doped silicate glasses and fibers. It provides an attractive prospect for expanding communication bandwidth by efficiently manipulating the emission of erbium to cover long wavelength.

l波段掺铒光纤（EDF）激光源在扩展通信带宽方面有很大的需求。然而，Er3+在波长大于1590 nm时的低发射截面（σe）限制了其增益性能。在本研究中，我们揭示了调控Er在硅酸盐玻璃中的发射行为的机理，并建立了预测掺铒硅酸盐玻璃的σe的线性模型，其R2=92.3%。通过配铒工程使σe1600提高到23.5×10-22 cm2。利用x射线吸收精细结构（XAFS）光谱、分子动力学（MD）模拟和荧光对结果进行了分析。此外，本工作在掺铒硅酸盐纤维中验证了该模型，并在1585-1625 nm范围内获得了20 dB的放大。这种配位工程在掺铒硅酸盐玻璃和纤维的应用中具有重要的潜力。通过有效地控制铒的发射以覆盖长波长，为扩大通信带宽提供了诱人的前景。

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引用次数: 0

Electrocaloric materials and applications based on multilayer ceramic capacitors 基于多层陶瓷电容器的电热材料及其应用

IF 8.4 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Journal of Materiomics

Pub Date : 2025-03-21 DOI: 10.1016/j.jmat.2025.101056

Li-Qian Cheng , Yongke Yan , Zhiping Wang , Zhengyu Li , Xiaotian Li

The increasing demand for effective and environmentally compatible cooling technologies has driven significant interest in the development of solid–state cooling materials. Among these, the electrocaloric (EC) system is considered a promising solid–state cooling method, offering advantages over other cooling technologies, such as low environmental impact, cost–effectiveness, high energy efficiency, and compact device size. To fully harness the potential of EC materials, multilayer ceramic capacitors (MLCCs) have emerged as effective and appropriate structures for EC cooling applications. This article provides a comprehensive review of recent advancements and research trends in MLCC–based EC materials, including the fundamentals of the EC effect, the performance of MLCC–based EC materials, EC effect (ECE) measurement, multilayer geometric structure design, and cooling device design based on MLCCs. A comparison of different systems of EC materials, along with an exploration of microstructure improvement, was conducted based on recent studies. A special focus was placed on multilayer structure design for EC performance enhancement, followed by reviewing two types of EC cooling device designs. The review offers insights into the fabrication and characterization of MLCC–based EC materials, offering guidance for future developments in EC material research and practical applications.

对有效和环境相容的冷却技术的需求日益增长，推动了对固态冷却材料发展的极大兴趣。其中，电热（EC）系统被认为是一种很有前途的固态冷却方法，与其他冷却技术相比，具有环境影响小、成本效益高、能源效率高、设备体积小等优点。为了充分利用EC材料的潜力，多层陶瓷电容器（mlcc）已经成为EC冷却应用的有效和合适的结构。本文综述了近年来mlcc基EC材料的研究进展和趋势，包括EC效应的基本原理、mlcc基EC材料的性能、EC效应的测量、多层几何结构设计和基于mlcc的冷却装置设计。对不同体系的EC材料进行了比较，并在此基础上对其微观结构的改进进行了探讨。重点介绍了提高EC性能的多层结构设计，然后回顾了两种类型的EC冷却装置设计。本文综述了基于mlcc的EC材料的制备和表征，为未来EC材料的研究和实际应用提供了指导。

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引用次数: 0