Fortnightly seminars online: Dielectric Materials for Electrical Energy Storage by Qi Zhang

Dielectric Materials for Electrical Energy Storage
Antiferroelectric (AFE) ceramics have shown great potential for applications in pulsed power capacitors because of their fast charge-discharge rates (on the order of nanoseconds). However, to date, it has been proven very difficult to simultaneously obtain large recoverable energy densities Wre and high energy efficiencies η in one type of ceramic, which limits the range of applications of these materials. Addressing this problem requires the development of ceramic materials that simultaneously offer a large ferroelectric-antiferroelectric (FE-AFE) phase-switching electric field EA, high electric breakdown strength Eb, and narrow polarization-electric field (P-E) hysteresis loops. In this work, via doping of La3+ into (Pb1-1.5xLax)(Zr0.5Sn0.43Ti0.07)O3 AFE ceramics, large EA and Eb due to respectively enhanced AFE phase stability and reduced electric conductivity, and slimmer hysteresis loops resulting from the appearance of the relaxor AFE state, are successfully obtained, and thus leading to great improvement of the Wre and η. Besides, both Wre and η change very little in the temperature range of 25–125 °C.
The seminar will be online due to COVID restrictions.
https://teams.microsoft.com/l/meetup-join/19%3ameeting_M2Y5OWYyMGUtOTQxOS00NTZmLWI0NzQtMjU1MGRlZDQ4ZjQx%40thread.v2/0?context=%7b%22Tid%22%3a%222f54ab68-83af-4d70-8895-a0d1e95ec899%22%2c%22Oid%22%3a%227778b4e1-e06d-485b-b530-cf013d4e9498%22%2c%22IsBroadcastMeeting%22%3atrue%7d&btype=a&role=a
Related news
Sinposio arrakastatsua Biofisika Institutuarekin batera
Ekainaren 19an ‘Processes and Materials for Life’ sinposioa ospatu genuen, Biofisika Institutuarekin batera. Sinposioaren helburua bi zentroek abangoardiako ikerketari buruz duten ezagutza…‘Materials for Society’. Hitzaldia/solasaldia Jorge García del Arcorekin
Datorren ekainaren 18an, 11:00etatik aurrera Leioako Martina Casiano auditorioan, BCMaterialsek ‘Materials for Society’ ekimenaren kapitulu berri bat irekiko du, zientzia artearekin, kulturarekin,…Maibelin Rosalesi elkarrizketa "STEMlab podcast" -en
Marie Curie Maibelin Rosales gure doktoretza-ondoko ikertzailea Bizkaiko Foru Aldundiko "STEMlab podcast" saileko protagonistetako bat da. Podcast horien helburua da emakumeen lana ezagutaraztea (…BCMaterialseko Tokiko Aholku Batzordearen bisita
Joan den ekainaren 3an, BCMaterials-eko Tokiko Aholku Batzordeko kideen bisita jaso genuen. Batzorde hau zientzia arloko gure zentroko aholku-organoetako bat da. Bileraren helburua zen Batzordeak…