Obtaining high energy storage performance and thermal stability simultaneously in BiFeO3-BaTiO3-Bi2LaTiNbO9 lead-free relaxor ferroelectric ceramics

Shuo Liu

doi:10.1016/j.ceramint.2022.11.323

Obtaining high energy storage performance and thermal stability simultaneously in BiFeO3-BaTiO3-Bi2LaTiNbO9 lead-free relaxor ferroelectric ceramics

2023-04-01

20

PRE

AI

刘硕 (Shuo Liu)

W

Wuwei Feng *

李

李晋红 (Jinhong Li)

B

Bin He

Z

Zhidi Bao

C

Changchun Zhao *

X

Xuezhu Luan

Y

Yi Zhong

DOI：10.1016/j.ceramint.2022.11.323

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Abstract

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In this work, bismuth layer-structured Bi2LaTiNbO9 (BLTN) was introduced into BiFeO3-BaTiO3 system. A large Wrec of 3.26 J/cm3 with a high eta of 80.8% were realized in the BF-BT-0.08BLTN ceramic. The addition of BLTN facilitates to enhance the relaxor behavior and band gap of BF-BT ceramics and also suppresses the grain growth. More impressively, the x = 0.08 ceramic shows an excellent thermal stability (Delta Wrec/ Wrec < 2.2%, 25-100 C) due to the temperature-insensitive permittivity of BLTN, which is superior to other BiFeO3-based ceramics. This work indicated that the BLTN is an effective additive for dielectric materials used in the variable temperature environment.

Keywords:

Ceramics

Energy storage

Thermal stability

BiFeO3-Based

Obtaining high energy storage performance and thermal stability simultaneously in BiFeO3-BaTiO3-Bi2LaTiNbO9 lead-free relaxor ferroelectric ceramics

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