Qiming Zhang, The Pennsylvania State University
Developing Dielectric Materials with Giant Electrocaloric (EC) Response and for Practical EC Cooling
Written by Tine Naerland
Electrocaloric effect (ECE) is the ability of a dielectric to change its temperature and entropy as an electric field is applied and released. It provides an effective means to realize solid-state cooling devices that are environmentally benign and potentially highly energy efficient. Large electrocaloric effect over a broad temperature range has been obtained in relaxor ferroelectric polymers, nanocomposites, and ferroelectric ceramics, under high electric fields. The easy control of the electric signals and large ECE enable a variety of cooling and thermal management device configurations, from micro-coolers, to portable, and large size cooling devices, to be realized.