High energy density in artificial heterostructures through relaxation time modulation

IF 45.8 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Science Pub Date : 2024-04-18 DOI:10.1126/science.adl2835

Sangmoon Han, Justin S. Kim, Eugene Park, Yuan Meng, Zhihao Xu, Alexandre C. Foucher, Gwan Yeong Jung, Ilpyo Roh, Sangho Lee, Sun Ok Kim, Ji-Yun Moon, Seung-Il Kim, Sanggeun Bae, Xinyuan Zhang, Bo-In Park, Seunghwan Seo, Yimeng Li, Heechang Shin, Kate Reidy, Anh Tuan Hoang, Suresh Sundaram, Phuong Vuong, Chansoo Kim, Junyi Zhao, Jinyeon Hwang, Chuan Wang, Hyungil Choi, Dong-Hwan Kim, Jimin Kwon, Jin-Hong Park, Abdallah Ougazzaden, Jae-Hyun Lee, Jong-Hyun Ahn, Jeehwan Kim, Rohan Mishra, Hyung-Seok Kim, Frances M. Ross, Sang-Hoon Bae

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引用次数: 0

Abstract

Electrostatic capacitors are foundational components of advanced electronics and high-power electrical systems owing to their ultrafast charging-discharging capability. Ferroelectric materials offer high maximum polarization, but high remnant polarization has hindered their effective deployment in energy storage applications. Previous methodologies have encountered problems because of the deteriorated crystallinity of the ferroelectric materials. We introduce an approach to control the relaxation time using two-dimensional (2D) materials while minimizing energy loss by using 2D/3D/2D heterostructures and preserving the crystallinity of ferroelectric 3D materials. Using this approach, we were able to achieve an energy density of 191.7 joules per cubic centimeter with an efficiency greater than 90%. This precise control over relaxation time holds promise for a wide array of applications and has the potential to accelerate the development of highly efficient energy storage systems.

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通过弛豫时间调制实现人工异质结构的高能量密度

静电电容器具有超快充放电能力，是先进电子和大功率电气系统的基础元件。铁电材料具有较高的最大极化，但较高的残余极化阻碍了其在储能应用中的有效部署。由于铁电材料的结晶性变差，以往的方法都遇到了问题。我们介绍了一种使用二维（2D）材料控制弛豫时间的方法，同时通过使用 2D/3D/2D 异质结构和保持铁电三维材料的结晶性，最大限度地减少能量损失。利用这种方法，我们能够实现每立方厘米 191.7 焦耳的能量密度，效率超过 90%。这种对弛豫时间的精确控制为广泛的应用带来了希望，并有可能加速高效储能系统的开发。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Science 综合性期刊-综合性期刊

CiteScore

61.10

自引率

0.90%

发文量

审稿时长

2.1 months

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