Tuning ferroelectricity of polymer blends for flexible electrical energy storage applications

作     者：Xin Zhang Yanda Jiang Ruoqi Gao Xinhui Li Zhonghui Shen Bao-Wen Li Qingfeng Zhang Shujun Zhang Ce-Wen Nan 张鑫;江彦达;高若棋;李昕蕙;沈忠慧;李宝文;张清风;张树君;南策文

作者机构：State Key Laboratory of Advanced Technology for Materials Synthesis and ProcessingCenter of Smart Materials and DevicesWuhan University of TechnologyWuhan 430070China International School of Materials Science and EngineeringWuhan University of TechnologyWuhan 430070China Hubei Key Lab of Ferro&Piezoelectric Materials and DevicesSchool of Materials Science&EngineeringHubei UniversityWuhan 430062China Institute for Superconducting and Electronic MaterialsAustralian Institute of Innovative MaterialsUniversity of WollongongNorth WollongongNSW 2500Australia School of Materials Science and EngineeringState Key Lab of New Ceramics and Fine ProcessingTsinghua UniversityBeijing 100084China 

出 版 物：《Science China Materials》 (中国科学（材料科学（英文版）)

年 卷 期：2021年第64卷第7期

页      面：1642-1652页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0702[理学-物理学] 

基　　金：supported by the Basic Science Center Program of the National Natural Science Foundation of China(51788104) the National Natural Science Foundation of China(51802237,52072280,51872214 and 51872079) the Young Elite Scientists Sponsorship Program by CAST(2018QNRC001) the Open Fund of Hubei Key Laboratory of Ferro&Piezoelectric Materials and Devices(K201807) the Fundamental Research Funds for the Central Universities(193201002,183101005 and 182401004) 

主　　题：ferroelectric polymers antiferroelectricity energy density breakdown strength dielectric 

摘      要：Ferroelectric polymers are the mainstay of advanced flexible electronic *** to tailor the ferroelectric polymer films for various applications via simple processing approaches is *** we demonstrate the tuning of ferroelectric responses can be achieved in polymer blends of poly(vinylidene fluoride-trifluoroethylene)(P(VDF-TrFE))and polymethyl methacrylate(PMMA)prepared via a simple two-step *** proposed two-step process endows the polymer blends with a random distribution of P(VDF-TrFE)crystalline phase,hence decoupling the coherent ferroelectric domain interactions between continuous ordered crystalline phases that ubiquitously existed in common P(VDF-TrFE)*** incorporation of the miscible non-crystalline PMMA chains with low-polarity results in reversal dipoles and a transition from ferroelectric to antiferroelectric-like behavior,overcoming the trade-off between the polarization and depolarization *** particular,resultant excellent mechanical and electrical properties of the polymer blend films give rise to remarkably improved breakdown strength and energy storage performance,surpassing P(VDF-TrFE)and commercial biaxial-oriented polypropylene *** work provides a simple and effective strategy to tailor the ferroelectric response of polymeric materials with great potential for flexible electrical energy storage applications.