通过多策略协同优化实现无铅陶瓷的宽温度跨度和大电致发光效应

IF 13.3 1区工程技术 Q1 ENGINEERING, CHEMICAL

Chemical Engineering Journal Pub Date : 2024-11-21 DOI:10.1016/j.cej.2024.157863

Kui Chen, Peng Zhao, Jingjing Chen, Chengtao Yang, Bin Tang

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引用次数: 0

摘要

电子技术的飞速发展增加了集成电路的功耗，给高效冷却带来了巨大挑战。尽管温度跨度（Tspan）和相变限制了其目前的实用性，但基于 BaTiO3 (BT) 的陶瓷提供了前景广阔的电致冷（EC）冷却，为体积庞大、对环境有害的蒸汽压缩制冷提供了一种紧凑、高效的替代方案。本研究探索了一种新型 (0.5-x)Ba0.72Sr0.28TiO3-0.5BaTi0.8Sn0.2O3-xBa0.72Ca0.28TiO3 [(0.5-x)BST-BTS-xBCT]陶瓷系统，利用相界工程实现了连续而广泛的相变。通过密度调整策略优化晶粒尺寸并增强击穿电场（Eb），0.2BCT 陶瓷在 38 °C 时表现出卓越的导电率性能，ΔT 为 2.71 K，Tspan 为 49.1 °C。这些研究结果表明，（0.5-x）BST-BTS-xBCT 陶瓷是一种很有前途的无铅材料，可用于 EC 应用，在改进微电子冷却解决方案方面潜力巨大。

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Broad temperature span and large electrocaloric effect in lead-free ceramics via multi-strategy synergistic optimization

The rapid advancement of electronic technology has increased power consumption in integrated circuits, presenting significant challenges for efficient cooling. BaTiO₃ (BT)-based ceramics offer promising electrocaloric (EC) cooling, providing a compact, efficient alternative to bulky, environmentally harmful vapor compression refrigeration, though temperature span (T_span) and phase transitions limit their current practicality. This study explores a novel (0.5-x)Ba_0.72Sr_0.28TiO₃-0.5BaTi_0.8Sn_0.2O₃-xBa_0.72Ca_0.28TiO₃ [(0.5-x)BST-BTS-xBCT] ceramic system, leveraging phase boundary engineering to achieve continuous and broad phase transitions. By optimizing grain size and enhancing the breakdown electric field (E_b) through a density adjustment strategy, the 0.2BCT ceramics demonstrated excellent EC performance at 38 °C, with a ΔT of 2.71 K and a T_span of 49.1 °C. These findings establish (0.5-x)BST-BTS-xBCT ceramics as a promising lead-free material for EC applications with significant potential for improving microelectronic cooling solutions.

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来源期刊

Chemical Engineering Journal 工程技术-工程：化工

CiteScore

21.70

自引率

9.30%

发文量

6781

审稿时长

2.4 months

期刊介绍： The Chemical Engineering Journal is an international research journal that invites contributions of original and novel fundamental research. It aims to provide an international platform for presenting original fundamental research, interpretative reviews, and discussions on new developments in chemical engineering. The journal welcomes papers that describe novel theory and its practical application, as well as those that demonstrate the transfer of techniques from other disciplines. It also welcomes reports on carefully conducted experimental work that is soundly interpreted. The main focus of the journal is on original and rigorous research results that have broad significance. The Catalysis section within the Chemical Engineering Journal focuses specifically on Experimental and Theoretical studies in the fields of heterogeneous catalysis, molecular catalysis, and biocatalysis. These studies have industrial impact on various sectors such as chemicals, energy, materials, foods, healthcare, and environmental protection.