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Electrocaloric response in a relaxor ferroelectric polymer at temperatures far below the dielectric maximum
Li, Jinglei1,2; Zhao, Xiaobo1,3; Zhang, Tian1; Qian, Xiaoshi1; Hou, Ying1; Yang, Lu1; Zhang, Q.M.1
2017
发表期刊Phase Transitions
ISSN01411594
卷号90期号:1页码:99-103
摘要Relaxor ferroelectric polymer poly(vinylidene fluoride–trifluoroethylene–chlorofluoroethylene) (P(VDF-TrFE-CFE)) and its blends have been shown to exhibit a giant electrocaloric effect (ECE) over a broad temperature range, e.g. from 0 to 50 °C. Here, a special calorimeter was designed to directly characterize the heat absorbed QECEdue to ECE cooling of the blend of P(VDF-TrFE-CFE) with P(VDF-TrFE) 65/35 mol% copolymer down to −15 °C, which covers the temperature range for many refrigeration applications. From QECE, the isothermal entropy change ΔS and adiabatic temperature change ΔT are deduced. The data reveal that at −15 °C the relaxor terpolymer/copolymer blend generates ΔS = 23.0J kg−1K−1and ΔT = 5.1K under 100 MV/m, which are still more than 65% of the ECE at room temperature. This temperature is far below the dielectric peak temperature of the relaxor blend and the results reveal the promise of the relaxor polymers for a broad range of EC cooling applications. © 2016 Informa UK Limited, trading as Taylor & Francis Group.
DOI10.1080/01411594.2016.1201820
EI入藏号20163002633414
EI主题词Ferroelectric materials
EI分类号641.2 Heat Transfer - 701.1 Electricity: Basic Concepts and Phenomena - 708.1 Dielectric Materials - 817.1 Polymer Products
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文献类型期刊论文
条目标识符http://ir.sic.ac.cn/handle/331005/25807
专题中国科学院上海硅酸盐研究所
作者单位1.Department of Electrical Engineering and Materials Research Institute, The Pennsylvania State University, University Park; PA, United States;
2.Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education and International Center for Dielectric Research, Xi'an Jiaotong University, Xi'an, China;
3.Key Laboratory of Inorganic Functional Materials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai, China
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GB/T 7714
Li, Jinglei,Zhao, Xiaobo,Zhang, Tian,et al. Electrocaloric response in a relaxor ferroelectric polymer at temperatures far below the dielectric maximum[J]. Phase Transitions,2017,90(1):99-103.
APA Li, Jinglei.,Zhao, Xiaobo.,Zhang, Tian.,Qian, Xiaoshi.,Hou, Ying.,...&Zhang, Q.M..(2017).Electrocaloric response in a relaxor ferroelectric polymer at temperatures far below the dielectric maximum.Phase Transitions,90(1),99-103.
MLA Li, Jinglei,et al."Electrocaloric response in a relaxor ferroelectric polymer at temperatures far below the dielectric maximum".Phase Transitions 90.1(2017):99-103.
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