About this Abstract |
Meeting |
MS&T23: Materials Science & Technology
|
Symposium
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Energy Materials for Sustainable Development
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Presentation Title |
Ceramics Nanocomposite Materials for Novel Energy Harvesting and Heat Management |
Author(s) |
Zdravko Kutnjak, Brigita Rozic, Zouhair Hanani, Daoud Mezzane, Mimoun El Marssi, Hana Ursic, Matjaz Spreitzer |
On-Site Speaker (Planned) |
Zdravko Kutnjak |
Abstract Scope |
The recent quest for greener energy harvesting and heat-management technologies has developed a significant interest in new nanocomposite ceramics with large electromechanical, triboelectric and electrocaloric (EC) effects [1]. Therefore, an overview of experimental and theoretical investigations of the large EC, piezoelectric and triboelectric response in ceramic nanocomposites and ceramics near antiferroelectric transition will be presented in this contribution. Specifically, the significant EC response observed by direct experiments in lead-free BCTZ-based ceramics will be reviewed, including polymer composites' large energy harvesting potential [2]. Besides, it is demonstrated that both negative and positive EC responses can be arbitrarily invoked in antiferroelectric materials by adequately controlling the electric field and temperature, which enables enhancement of the electrocaloric cooling power for up to 100%.
[1] Z. Kutnjak., B. Rožič, R. Pirc., Wiley Encyclopedia of Electrical and Electronics Engineering, 1-19 (2015). [2] Z. Hanani et al., Nano Energy 81, 105661 (2021). |