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超高能量储存密度和无介电物的效率与三明治结构

Fei Yan¹, Jin Qian², Jinfeng Lin²

¹School of Advanced Materials and Nanotechnology, Xidian University, Xi'an, 710126, China.

Small (Weinheim an der Bergstrasse, Germany)

|October 6, 2023

概括

研究人员使用三明治结构开发了新的无陶介电材料,以增强能量储存. 这种设计为先进的电子设备实现了超高可回收能储能密度和效率.

科学领域:

材料科学材料科学材料科学
固态物理固态物理
电陶制品是电陶制品中的一种.

背景情况:

无介电电容器对于高功率应用至关重要,为环境带来好处.
开发具有优越储能性能的无陶仍然是一个重大挑战.
现有的材料往往难以满足对能量密度和效率的苛刻要求.

研究的目的:

设计和制造环保无陶介电材料,提高储能性能.
通过三明治结构的协同效应来提高储能能力.
研究这些新材料在高功率电子设备中的潜力.

主要方法:

制造具有三明治结构的无陶介电材料.
使用特定的化学成分用于外层 (0.35BiFeO3 -0.65SrTiO3) 和中间层 (Bi0.39Na0.36Sr0.25TiO3).
实验性表征和理论模拟来评估性能.

主要成果:

实现了超过700kVcm-1.1的断裂强度.
获得了9.05 J cm−3.3 的超高可回收能储存密度.
在710kV cm-1.1,达到接近理想的97%的储能效率.
在1-100赫兹的频率范围内证明了高储能效率 (≥96%).
报告的功率密度高达188MW cm−3 在400kV cm−1.

结论:

设计的无陶具有三明治结构,表现出卓越的综合性储能性能.
这些材料在储能领域显示出作为无替代品的显著前景.
在三明治结构中的协同效应是实现卓越介电性能的关键.

关键词:

介电电容器的介电电容器储能密度和储能效率的提高.没有的陶.三明治结构就是三明治结构.

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