储能与先进电介质的电热制冷性能。

Energy Storage and Electrocaloric Cooling Performance of Advanced Dielectrics.

机构信息

Research Center for Optoelectronic Materials and Devices, School of Physical Science and Technology, Guangxi University, Nanning 530004, China.

Guangxi Key Laboratory of Processing for Non-ferrous Metal and Featured Materials, Guangxi University, Nanning 530004, China.

出版信息

Molecules. 2021 Jan 18;26(2):481. doi: 10.3390/molecules26020481.

DOI:10.3390/molecules26020481

PMID:33477519

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7831093/

Abstract

Dielectric capacitors are widely used in pulse power systems, electric vehicles, aerospace, and defense technology as they are crucial for electronic components. Compact, lightweight, and diversified designs of electronic components are prerequisites for dielectric capacitors. Additionally, wide temperature stability and high energy storage density are equally important for dielectric materials. Ferroelectric materials, as special (spontaneously polarized) dielectric materials, show great potential in the field of pulse power capacitors having high dielectric breakdown strength, high polarization, low-temperature dependence and high energy storage density. The first part of this review briefly introduces dielectric materials and their energy storage performance. The second part elaborates performance characteristics of various ferroelectric materials in energy storage and refrigeration based on electrocaloric effect and briefly shed light on advantages and disadvantages of various common ferroelectric materials. Especially, we summarize the polarization effects of underlying substrates (such as GaN and Si) on the performance characteristics of ferroelectric materials. Finally, the review will be concluded with an outlook, discussing current challenges in the field of dielectric materials and prospective opportunities to assess their future progress.

摘要

介电电容器在脉冲功率系统、电动汽车、航空航天和国防技术中得到了广泛应用，因为它们对电子元件至关重要。电子元件的紧凑、轻量和多样化设计是介电电容器的前提条件。此外，介电材料的宽温度稳定性和高储能密度同样重要。铁电材料作为特殊（自发极化）介电材料，在具有高介电击穿强度、高极化、低温依赖性和高储能密度的脉冲功率电容器领域具有巨大的潜力。本文综述的第一部分简要介绍了介电材料及其储能性能。第二部分阐述了基于电卡效应的各种铁电材料在储能和制冷方面的性能特点，并简要介绍了各种常见铁电材料的优缺点。特别是，我们总结了基底（如 GaN 和 Si）对铁电材料性能的极化效应。最后，本文将对介电材料领域的当前挑战和未来进展进行展望，讨论未来的机会。