Enhanced Electrocaloric Effect and Energy Storage Density in Lead‐Free 0.8Na 0.5 Bi 0.5 TiO 3 ‐0.2SrTiO 3  Ceramics | Zendy

Kumar Ajit | Zendy; Kumar Raju | Zendy; Singh Kedar | Zendy; Singh Satyendra | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Premium

Enhanced Electrocaloric Effect and Energy Storage Density in Lead‐Free 0.8Na 0.5 Bi 0.5 TiO 3 ‐0.2SrTiO 3 Ceramics

Author(s) -

Kumar Ajit,

Kumar Raju,

Singh Kedar,

Singh Satyendra

Publication year - 2019

Publication title -

physica status solidi (a)

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.532

H-Index - 104

eISSN - 1862-6319

pISSN - 1862-6300

DOI - 10.1002/pssa.201800786

Subject(s) - electrocaloric effect , materials science , atmospheric temperature range , electric field , ceramic , energy storage , ferroelectricity , ferroelectric ceramics , range (aeronautics) , analytical chemistry (journal) , thermodynamics , optoelectronics , dielectric , chemistry , metallurgy , composite material , physics , power (physics) , chromatography , quantum mechanics

Enhanced electrocaloric response in lead‐free 0.8Na 0.5 Bi 0.5 TiO 3 ‐0.2SrTiO 3 (NBT‐0.2ST) ceramics are investigated using an indirect approach based on Maxwell's relations over a wide operating temperature range. The electrocaloric effect (ECE) is obtained over a broad temperature range with the maximum temperature change ( Δ T ) value reaching 0.75 K at the working temperature of 400 K under the electric field of 35 kV cm −1 . The maximum EC coefficient ( ζ = Δ T / Δ E ) is found to be 0.022 K·cm kV −1 at 400 K. Energy storage density of NBT‐0.2ST are calculated and found to be 0.36 J cm −3 at 393 K. High value of ECE and a wide working temperature range (350–450 K) make it a promising lead‐free ferroelectric material for applications in cooling technologies.

This content is not available in your region!

Continue researching here.

Having issues? You can contact us here

Accelerating Research