Toward Wearable Cooling Devices: Highly Flexible Electrocaloric Ba0.67Sr0.33TiO3 Nanowire Arrays

Flexible lead-free ferroelectric ceramic nanowire arrays exhibit a unique combination of features that can contribute to the realization of wearable cooling devices, including an outstanding electrocaloric effect at low fields, high efficiency, bendability and stretchability, and robustness against mechanical deformations. Thermodynamic and phase-field simulations are carried out to validate their superior electrocaloric effect in comparison to thin films.

[1]  Henry A. Sodano,et al.  Vertically aligned BaTiO3 nanowire arrays for energy harvesting , 2014 .

[2]  N. D. Mathur,et al.  Giant Electrocaloric Effect in Thin-Film PbZr0.95Ti0.05O3 , 2005, Science.

[3]  K Kuklane,et al.  Personal cooling with phase change materials to improve thermal comfort from a heat wave perspective. , 2012, Indoor air.

[4]  Y. Ju,et al.  Solid-State Refrigeration Based on the Electrocaloric Effect for Electronics Cooling , 2010 .

[5]  F. Bateman,et al.  Giant electrocaloric effect in ferroelectric poly(vinylidenefluoride-trifluoroethylene) copolymers near a first-order ferroelectric transition , 2012 .

[6]  Tilak Dias,et al.  Wearable cooling system to manage heat in protective clothing , 2012 .

[7]  X. Chen,et al.  Enhanced Electrocaloric Effects in Spark Plasma‐Sintered Ba0.65Sr0.35TiO3‐Based Ceramics at Room Temperature , 2013 .

[8]  Yifan Yang,et al.  Man-portable personal cooling garment based on vacuum desiccant cooling , 2012 .

[9]  Qi Zhang,et al.  A Giant Electrocaloric Effect in Nanoscale Antiferroelectric and Ferroelectric Phases Coexisting in a Relaxor Pb0.8Ba0.2ZrO3 Thin Film at Room Temperature , 2013 .

[10]  Ingvar Holmér,et al.  Cooling vests with phase change materials: the effects of melting temperature on heat strain alleviation in an extremely hot environment , 2011, European Journal of Applied Physiology.

[11]  D. Vuuren,et al.  Modeling global residential sector energy demand for heating and air conditioning in the context of climate change , 2009 .

[12]  A. D. Flouris,et al.  Design and Control Optimization of Microclimate Liquid Cooling Systems Underneath Protective Clothing , 2006, Annals of Biomedical Engineering.

[13]  Long-Qing Chen,et al.  Strain effect on phase transitions of BaTiO3 nanowires , 2011 .

[14]  Long-qing Chen,et al.  Phase transitions and domain structures of ferroelectric nanoparticles: Phase field model incorporating strong elastic and dielectric inhomogeneity , 2013 .

[15]  Qi Zhang,et al.  Electrocaloric Effect: An Introduction , 2014 .

[16]  Phillip A Bishop,et al.  Evaluation of a Carbon Dioxide Personal Cooling Device for Workers in Hot Environments , 2010, Journal of occupational and environmental hygiene.

[17]  Shenyang Y. Hu,et al.  Ferroelectric domain morphologies of (001) PbZr1−xTixO3 epitaxial thin films , 2005 .

[18]  Srinivas Garimella,et al.  Demonstration of a wearable cooling system for elevated ambient temperature duty personnel , 2013 .

[19]  Guangzu Zhang,et al.  Relaxor Ferroelectric‐Based Electrocaloric Polymer Nanocomposites with a Broad Operating Temperature Range and High Cooling Energy , 2015, Advanced materials.

[20]  X. Moya,et al.  Caloric materials near ferroic phase transitions. , 2014, Nature materials.

[21]  N. Alford,et al.  Electrocaloric temperature change constrained by the dielectric strength , 2012 .

[22]  L. Bellaiche,et al.  Unusual phase transitions in ferroelectric nanodisks and nanorods , 2004, Nature.

[23]  S. Trolier-McKinstry,et al.  Next-generation electrocaloric and pyroelectric materials for solid-state electrothermal energy interconversion , 2014 .

[24]  R. AL-Dadah,et al.  Thermoelectric Cooling Device Integrated with PCM Heat Storage for MS Patients , 2014 .

[25]  Daniel Sharon,et al.  On the challenge of developing advanced technologies for electrochemical energy storage and conversion , 2014 .

[26]  S H Constable,et al.  A lightweight ambient air-cooling unit for use in hazardous environments. , 1997, American Industrial Hygiene Association journal.

[27]  Maimon C. Rose,et al.  Giant electrocaloric effect around Tc. , 2012, Physical review letters.

[28]  Qiming Zhang,et al.  Large Electrocaloric Effect in Ferroelectric Polymers Near Room Temperature , 2008, Science.

[29]  Xihong Hao,et al.  Energy-storage properties and electrocaloric effect of Pb(1-3x/2)LaxZr0.85Ti0.15O3 antiferroelectric thick films. , 2014, ACS applied materials & interfaces.

[30]  Matjaz Valant,et al.  Electrocaloric materials for future solid-state refrigeration technologies , 2012 .

[31]  Xavier Moya,et al.  The Electrocaloric Efficiency of Ceramic and Polymer Films , 2013, Advanced materials.

[32]  Guangzu Zhang,et al.  Colossal Room-Temperature Electrocaloric Effect in Ferroelectric Polymer Nanocomposites Using Nanostructured Barium Strontium Titanates. , 2015, ACS nano.

[33]  Magda S. Hammam,et al.  A Range of Body Impedance Values for Low Voltage, Low Source Impedance Systems of 60 HZ , 1983, IEEE Transactions on Power Apparatus and Systems.

[34]  S. Alpay,et al.  Influence of mechanical boundary conditions on the electrocaloric properties of ferroelectric thin films , 2008 .

[35]  A. Sannino,et al.  Feasibility of a DC network for commercial facilities , 2002, Conference Record of the 2002 IEEE Industry Applications Conference. 37th IAS Annual Meeting (Cat. No.02CH37344).

[36]  Guangzu Zhang,et al.  Ferroelectric Polymer Nanocomposites for Room‐Temperature Electrocaloric Refrigeration , 2015, Advanced materials.