FLAME-inars

Our Speakers

18th November 2021 – Talk 16:

Energy Storage Performance of PbZrO3-Based Antiferroelectric Ceramics

Prof. Tongqing Yang Functional Materials Research Laboratory, School of Materials Science and Engineering Tongji University, Shanghai, China

Abstract

The excellent energy-storage performance of antiferrolelectric ceramic capacitors, such as high-power density, fast discharge speed, and the ability to operate over a broad temperature range, gives rise to their wide applications in different energy-storage devices.

In this talk, I will first introduce the research status of antiferroelectric ceramics in China briefly. Then, I will introduce some of our recent works we did and are doing in my group, including lead-based (PbZrO3, PbHfO3) and lead free (AgNbO3) -based antiferroelectric ceramics, and how to improve their energy-storage density by tailoring the composition and phase transition electric field. In last, I will discuss some of my ideas about the value of energy-storage density of antiferroelectric ceramics obtained in different methods.

Tongqing Yang received his Ph.D. degree in electronic materials and devices at Xi’an Jiaotong University of China in 2001. He is currently a professor in the School of Materials Science and Engineering of Tongji University, Shanghai, China.

Before joining Tongji University in 2005, he worked as a postdoctoral fellow in the field of High Tc Superconducting Quantum Interference Devices (SQUID) at Kyushu University in Fukuoka city of Japan from 2001 to 2005. He was a visiting professor in Technische Universität Darmstadt of Germany from Jul.-Sep. 2015.

His current research interests include antiferroelectric materials and its energy storage, piezoelectric effect and piezoelectric energy harvesting, and pyroelectric and electrocaloric effect.

About the FLAME-inars

The FLAME-inars are organized by the collaborative project FLAME at TU Darmstadt, in which electronic-structure-property relationships are being developed and exploited to realize novel lead-free antiferroelectric compounds. The seminars will gather experts in processing, characterization and theory to discuss materials and applications, bulk and thin films, fundamental properties, electronic structure & defects, and related aspects.