Colossal electrocaloric effect in an interface-augmented ferroelectric polymer-Reference-Cited by-同舟云学术

Colossal electrocaloric effect in an interface-augmented ferroelectric polymer

Published:2023-12 Issue:6674 Volume:382 Page:1020-1026
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Zheng Shanyu¹^ORCID,Du Feihong¹^ORCID,Zheng Lirong²^ORCID,Han Donglin¹,Li Qiang¹,Shi Junye¹,Chen Jiangping¹,Shi Xiaoming³^ORCID,Huang Houbing³^ORCID,Luo Yaorong⁴^ORCID,Yang Yurong⁴^ORCID,O’Reilly Padraic⁵^ORCID,Wei Linlin⁶,de Souza Nicolas⁷^ORCID,Hong Liang²^ORCID,Qian Xiaoshi¹⁸^ORCID

Affiliation:

1. State Key Laboratory of Mechanical System and Vibration, Interdisciplinary Research Center, Institute of Refrigeration and Cryogenics, and MOE Key Laboratory for Power Machinery and Engineering, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.

2. School of Physics and Astronomy, Institute of Natural Sciences, Shanghai National Center for Applied Mathematics (SJTU Center) and MOE-LSC, Shanghai Jiao Tong University, Shanghai 200240, China.

3. School of Materials Science and Engineering and Advanced Research Institute of Multidisciplinary Science, Beijing Institute of Technology, Beijing 100081, China.

4. National Laboratory of Solid State Microstructures and Collaborative Innovation Center of Advanced Microstructures, Department of Materials Science and Engineering, Nanjing University, Nanjing 210093, China.

5. Molecular Vista, San Jose, CA 95119, USA.

6. Bruker (Beijing) Scientific Technology, Beijing 100192, China.

7. Australian Nuclear Science and Technology Organisation (ANSTO), Sydney, NSW 2232, Australia.

8. Shanghai Jiao Tong University ZhongGuanCun Research Institute, Liyang 213300, China.

Abstract

The electrocaloric effect demands the maximized degree of freedom (DOF) of polar domains and the lowest energy barrier to facilitate the transition of polarization. However, optimization of the DOF and energy barrier—including domain size, crystallinity, multiconformation coexistence, polar correlation, and other factors in bulk ferroelectrics—has reached a limit. We used organic crystal dimethylhexynediol (DMHD) as a three-dimensional sacrificial master to assemble polar conformations at the heterogeneous interface in poly(vinylidene fluoride)–based terpolymer. DMHD was evaporated, and the epitaxy-like process induced an ultrafinely distributed, multiconformation-coexisting polar interface exhibiting a giant conformational entropy. Under a low electric field, the interface-augmented terpolymer had a high entropy change of 100 J/(kg·K). This interface polarization strategy is generally applicable to dielectric capacitors, supercapacitors, and other related applications.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Link

https://www.science.org/doi/pdf/10.1126/science.adi7812

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