Electrocaloric Materials for Solid-State Refrigeration

被引:400
作者
Lu, Sheng-Guo
Zhang, Qiming [1 ]
机构
[1] Penn State Univ, Dept Elect Engn, University Pk, PA 16802 USA
关键词
LOW-TEMPERATURES; COPOLYMER; SULFATE;
D O I
10.1002/adma.200802902
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The electrocaloric effect (ECE) in dielectric materials has great potential in realizing solid-state cooling devices with compact size and high efficiency, which are highly desirable for a broad range of applications. This paper presents the general considerations for dielectric materials to achieve large ECE and reviews the experimental efforts investigating ECE in various polar dielectrics. For practical cooling devices, an ECE material must possess a large isothermal entropy change besides a large adiabatic temperature change. We show that polar dielectrics operated at temperatures near order-disorder transition have potential to achieve large ECE due to the possibility of large change in polarization induced by electric field and large entropy change associated with the polarization change. We further show that indeed the ferroelectric poly(vinylidene fluoride-trifluoroethylene)-based polymers display a large ECE, i.e., an isothermal entropy change of 55J (kgK)(-1) and an adiabatic temperature change of more than 12 degrees C, at temperatures above the order-disorder transition.
引用
收藏
页码:1983 / 1987
页数:5
相关论文
共 30 条
[11]   CRYOGENIC REFRIGERATION UTILIZING ELECTROCALORIC EFFECT IN PYROELECTRIC LITHIUM SULFATE MONOHYDRATE [J].
LANG, SB .
FERROELECTRICS, 1976, 11 (3-4) :519-523
[12]   RECENT TOPICS IN FERROELECTRIC PROPERTIES AT LOW-TEMPERATURES [J].
LAWLESS, WN .
FERROELECTRICS, 1980, 24 (1-4) :327-335
[13]   SPECIFIC-HEAT AND ELECTRO-CALORIC PROPERTIES OF A SRTIO3 CERAMIC AT LOW-TEMPERATURES [J].
LAWLESS, WN ;
MORROW, AJ .
FERROELECTRICS, 1977, 15 (3-4) :159-165
[14]  
Lines M., 1977, Glass, Principles and Applications of Ferroelectrics and Related Materials
[15]  
Mathur N., 2006, int. Patent, Patent No. [2006/056809, 2006056809]
[16]  
Min A., 1981, FERROELECTRICS, V37, P647
[17]   Giant electrocaloric effect in thin-film PbZr0.95Ti0.05O3 [J].
Mischenko, AS ;
Zhang, Q ;
Scott, JF ;
Whatmore, RW ;
Mathur, ND .
SCIENCE, 2006, 311 (5765) :1270-1271
[18]   Large electrocaloric effect in ferroelectric polymers near room temperature [J].
Neese, Bret ;
Chu, Baojin ;
Lu, Sheng-Guo ;
Wang, Yong ;
Furman, E. ;
Zhang, Q. M. .
SCIENCE, 2008, 321 (5890) :821-823
[19]   Reduction of hysteresis losses in the magnetic refrigerant Gd5Ge2Si2 by the addition of iron [J].
Provenzano, V ;
Shapiro, AJ ;
Shull, RD .
NATURE, 2004, 429 (6994) :853-857
[20]   FEASIBILITY OF ELECTROCALORIC REFRIGERATION FOR THE 4-15-K TEMPERATURE-RANGE [J].
RADEBAUGH, R ;
LAWLESS, WN ;
SIEGWARTH, JD ;
MORROW, AJ .
CRYOGENICS, 1979, 19 (04) :187-208