Center for Correlated Electron Systems

Seminar

Ferroelectrics for Energy Storage

July 20, 2020l Hit 814
Date : January 15, 2020 15:30 ~ 17:00
Speaker : Dr. Sun Zixiong (Shaanxi University of Science and Technology)
Location : Bldg. 19, Rm. 210

Compared with Li ion batteries, fuel cells, and super capacitors, energy storage dielectrics/ferroelectrics have already shown obvious advantages on fast charge-discharge time, providing huge potential on applying in high power device. Because of their dismerit of low energy storage density (ESD), which has been regarded as one of the key factors to determine energy storage materials, commercialization for energy storage dielectrics/ferroelectrics is still far to reach. Motivated by this, developing the ESD of dielectrics/ferroelectrics has been a hot pot in energy storage field, enhancing the dielectric permittivity (ε) and electrical breakdown strength (E B) have been considered as two efficient ways. Here, five state dielectric/ferroelectric energy storage materials from bulks to thin films have been introduced with their respective merits and demerits. General methods for improving their ε and E B including structure designing, composition optimizing and materials compositing have been revealed, and the superiority for interface engineering has also been pointed out. Finally, energy storage dielectrics/ferroelectrics deserve to have more investigations

 

Host: Prof. Tae Won Noh