High recoverable energy storage density in nominal (0.67-x)BiFeO3-0.33BaTiO3-xBaBi2Nb2O9 lead-free composite ceramics. Issue 16 (15th August 2021)

• Record Type: Journal Article
• Authors: Bai, Xingzhi; Chen, Zhiteng; Zheng, Peng; Bai, Wangfeng; Zhang, Jingji; Li, Lili; Wen, Fei; Zheng, Liang; Zhang, Yang
• Is Part Of: Ceramics international. Volume 47:Issue 16(2021)
• Page Start: 23116
• Page End: 23123
• Publication Date: 2021-08-15
• Subjects: Lead-free ceramics -- Energy storage materials -- Relaxor ferroelectric -- Bismuth ferrite -- Composite ceramics; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2021.05.025
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: A series of novel lead-free energy storage ceramics, (0.67- x )BiFeO3 -0.33BaTiO3 - x BaBi2 Nb2 O9 (BF-BT- x BBN), were fabricated by traditional solid-state reaction, where bismuth layer-structured BaBiNb2 O9 was incorporated into perovskite-structured BiFeO3 –BaTiO3 ceramic as an additive. The addition of BaBi2 Nb2 O9 increased the relaxor behavior and breakdown strength of BF-BT ceramics due to the formation of polar nanoregionals (PNRs), inducing enhanced energy storage performance. The composite ceramics, with x = 0.08, showed a large recoverable energy density ( W rec ) of 3.08 J/cm 3 and an outstanding energy storage efficiency ( η ) of 85.57% under an applied electric field of 230 kV/cm. Moreover, the composite ceramics exhibited excellent thermal stability and high stability toward different frequencies in a temperature range of 20–100 °C and a frequency range of 0.1–1500 Hz. These results demonstrate great potential of novel BF-BT- x BBN composite ceramics for next-generation energy storage applications.