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Silver Niobate Lead-Free Antiferroelectric Ceramics: Enhancing Energy Storage Density by B-Site Doping

Journal Article


Abstract


  • Lead-free dielectric ceramics with high recoverable energy density are highly desired to sustainably meet the future energy demand. AgNbO 3 -based lead-free antiferroelectric ceramics with double ferroelectric hysteresis loops have been proved to be potential candidates for energy storage applications. Enhanced energy storage performance with recoverable energy density of 3.3 J/cm 3 and high thermal stability with minimal energy density variation ( < 10%) over a temperature range of 20-120 °C have been achieved in W-modified AgNbO 3 ceramics. It is revealed that the W 6+ cations substitute the B-site Nb 5+ and reduce the polarizability of B-site cations, leading to the enhanced antiferroelectricity, which is confirmed by the polarization hysteresis and dielectric tunability. It is believed that the polarizability of B-site cations plays a dominant role in stabilizing the antiferroelectricity in AgNbO 3 system, in addition to the tolerance factor, which opens up a new design approach to achieve stable antiferro electric materials.

UOW Authors


  •   Zhao, Lei (external author)
  •   Gao, Jing (external author)
  •   Liu, Qing (external author)
  •   Zhang, Shujun
  •   Li, Jing-Feng (external author)

Publication Date


  • 2018

Citation


  • Zhao, L., Gao, J., Liu, Q., Zhang, S. & Li, J. (2018). Silver Niobate Lead-Free Antiferroelectric Ceramics: Enhancing Energy Storage Density by B-Site Doping. ACS Applied Materials and Interfaces, 10 (1), 819-826.

Scopus Eid


  • 2-s2.0-85040449189

Number Of Pages


  • 7

Start Page


  • 819

End Page


  • 826

Volume


  • 10

Issue


  • 1

Place Of Publication


  • United States

Abstract


  • Lead-free dielectric ceramics with high recoverable energy density are highly desired to sustainably meet the future energy demand. AgNbO 3 -based lead-free antiferroelectric ceramics with double ferroelectric hysteresis loops have been proved to be potential candidates for energy storage applications. Enhanced energy storage performance with recoverable energy density of 3.3 J/cm 3 and high thermal stability with minimal energy density variation ( < 10%) over a temperature range of 20-120 °C have been achieved in W-modified AgNbO 3 ceramics. It is revealed that the W 6+ cations substitute the B-site Nb 5+ and reduce the polarizability of B-site cations, leading to the enhanced antiferroelectricity, which is confirmed by the polarization hysteresis and dielectric tunability. It is believed that the polarizability of B-site cations plays a dominant role in stabilizing the antiferroelectricity in AgNbO 3 system, in addition to the tolerance factor, which opens up a new design approach to achieve stable antiferro electric materials.

UOW Authors


  •   Zhao, Lei (external author)
  •   Gao, Jing (external author)
  •   Liu, Qing (external author)
  •   Zhang, Shujun
  •   Li, Jing-Feng (external author)

Publication Date


  • 2018

Citation


  • Zhao, L., Gao, J., Liu, Q., Zhang, S. & Li, J. (2018). Silver Niobate Lead-Free Antiferroelectric Ceramics: Enhancing Energy Storage Density by B-Site Doping. ACS Applied Materials and Interfaces, 10 (1), 819-826.

Scopus Eid


  • 2-s2.0-85040449189

Number Of Pages


  • 7

Start Page


  • 819

End Page


  • 826

Volume


  • 10

Issue


  • 1

Place Of Publication


  • United States