Results 51 to 60 of about 2,534 (200)

Low-k nano-dielectrics facilitate electric-field induced phase transition in high-k ferroelectric polymers for sustainable electrocaloric refrigeration

Nature Communications
Ferroelectric polymer-based electrocaloric effect may lead to sustainable heat pumps and refrigeration owing to the large electrocaloric-induced entropy changes, flexible, lightweight and zero-global warming potential.
Qiang Li, Luqi Wei, Ni Zhong, Xiaoming Shi, Donglin Han, Shanyu Zheng, Feihong Du, Junye Shi, Jiangping Chen, Houbing Huang, Chungang Duan, Xiaoshi Qian   +11 more
doaj   +1 more source

Advanced materials for solid-state refrigeration

, 2013
Recent progress on caloric effects are reviewed. The application of external stimuli such as magnetic field, hydrostatic pressure, uniaxial stress and electric field give rise respectively to magnetocaloric, barocaloric, elastocaloric and electrocaloric ...
Acet, Mehmet, Manosa, Lluis, Planes, Antoni   +2 more
core   +1 more source

Enhanced energy-storage performance and electrocaloric effect in compositionally graded Pb(1−3x/2)LaxZr0.85Ti0.15O3 antiferroelectric thick films [PDF]

, 2015
The compositionally graded multilayer Pb(1−3x/2)LaxZr0.85Ti0.15O3 (PLZT) antiferroelectric (AFE) thick films were deposited on LaNiO3/Si (100) substrates by using a sol–gel method.
Hao, Xihong, Zhang, Qi, Zhao, Ye
core   +1 more source

Entropy‐Driven Innovations: Entropy Stabilized Oxides for High‐Performance Next‐Generation Lithium–Sulfur Batteries

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This article explores high‐entropy‐stabilized oxides (HEOs) as novel functional materials for addressing critical issues in lithium–sulfur (Li–S) batteries, including lithium polysulfide (LPS) shuttling, inadequate conductivity, and slow redox kinetics.
Hassan Raza, Jialiang Wei, Zhicai Wang, Zhaoyang Lv, Junye Cheng, Jia Xu, Liang An, Yuliang Liu, Sergey Ryazantsev, Shukui Li, Guangping Zheng   +10 more
wiley   +1 more source

Large Electrocaloric Effect in Stretched Relaxor Ferroelectric Polymers near Morphotropic Phase Boundary

Chemistry
Use of the morphotropic phase boundary (MPB) is a promising approach to enhance the electrocaloric effect in ferroelectric polymers. This is usually achieved by a composition method, and polymer processing near the MPB to tune electrocaloric response has
Linxiao Xu, Yuquan Liu, Jiahong Li, Hangyao Wu, Yuanqi Wang, Ze Yuan, Ling Cheng, Yang Li, Huamin Zhou, Yang Liu   +9 more
doaj   +1 more source

Thermal management of chips by a device prototype using synergistic effects of 3-D heat-conductive network and electrocaloric refrigeration

Nature Communications, 2022
Efficient thermal structure and precise heat management become a substantial challenge for electronics. Here, authors utilize the synergistic effect of classic heat transfer and electrocaloric cooling for fixed-point thermal management of chips.
Ming-Ding Li, Xiao-Quan Shen, Xin Chen, Jia-Ming Gan, Fang Wang, Jian Li, Xiao-Liang Wang, Qun-Dong Shen   +7 more
doaj   +1 more source

Direct electrocaloric measurement of 0.9Pb(Mg1/3Nb2/3)O3-0.1PbTiO3 films using scanning thermal microscopy [PDF]

, 2016
We show that scanning thermal microscopy can measure reversible electrocaloric (EC) effects in <40 μm-thick ceramic films of the relaxor ferroelectric 0.9Pb(Mg1/3Nb2/3)O3-0.1PbTiO3, with the substrate present.

core   +1 more source

State transition and electrocaloric effect of BaZr$_{x}$Ti$_{1-x}$O$_3$: simulation and experiment

, 2016
The electrocaloric effect (ECE) of BaZr$_{x}$Ti$_{1-x}$O$_3$ (BZT) is closely related to the relaxor state transition of the materials. This work presents a systematic study on the ECE and the state transition of the BZT, using a combined canonical and ...
Bai-Xiang Xu, Christian Molin, Correia T., Doru C. Lupascu, Karsten Albe, Rabe K., Smolenskii J. A., Sylvia Gebhardt, Vladimir V. Shvartsman, Yang-Bin Ma   +9 more
core   +1 more source

Direct evidence for electrostriction‐enhanced piezoelectricity in poly(vinylidene fluoride‐co‐trifluoroethylene) random copolymers

Responsive Materials, EarlyView.
Direct experimental evidence for electrostriction‐enhanced piezoelectricity is obtained for a quenched‐stretched‐annealed‐poled P(VDF‐TrFE) 52/48 mol.% random copolymer using time‐resolved small‐angle X‐ray scattering and wide‐angle X‐ray diffraction. Upon stretching up to 6% strain, the crystallinity (xc) increases 10% at the expense of the contents ...
Zhiwen Zhu, Guanchun Rui, Siyu Wu, Honghu Zhang, Ruipeng Li, Lei Zhu   +5 more
wiley   +1 more source

Determination of optimal reversed field with maximal electrocaloric cooling by a direct entropy analysis

, 2016
Application of a negative field on a positively poled ferroelectric sample can enhance the electrocaloric cooling and appears as a promising method to optimize the electrocaloric cycle.
Bai-Xiang Xu, Karsten Albe, Kutnjak Z., Nikola Novak, Yang-Bin Ma   +4 more
core   +1 more source