Ultra-fast charge-discharge and high energy storage density realized in NaNbO3–La(Mn0.5Ni0.5)O3 ceramics. Issue 20 (15th October 2021)

• Record Type: Journal Article
• Authors: Wang, Jitong; Nie, Xinru; Peng, Zhanhui; Lei, Xiaoping; Liang, Pengfei; Yang, Zupei; Chao, Xiaolian
• Is Part Of: Ceramics international. Volume 47:Issue 20(2021)
• Page Start: 28493
• Page End: 28499
• Publication Date: 2021-10-15
• Subjects: NaNbO3 -- Energy-storage density -- Remanent polarization -- Ultra-fast charge-discharge -- Grain size -- La(Mn0.5Ni0.5)O3; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2021.07.004
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: Lead-free antiferroelectric (AFE) NaNbO3 (NN) is one of promising materials for dielectric capacitors, but the recoverable energy-storage density and efficiency get restrained owing to huge remanent polarization and limited dielectric breakdown field strength. In this work, a variety of NN based lead-free bulk (1- x )NaNbO3 - x La(Mn0.5 Ni0.5 )O3 (abbreviated as (1- x )NN- x LMN, x = 0, 0.05, 0.10, 0.15, 0.20) ceramics were designed using a solid-state synthesis method. Remarkably, an ultra-fast charge-discharge speed 47 ns and an acceptable recoverable energy-storage density W rec ~1.77 J/cm 3 with a high efficiency η = 77% were obtained under the E b of 200 kV/cm at x = 0.05. The superior energy storage performance is attributed to the regulation of domain size and voltage resistance by special ions substitution of A and B sites. This work not only proposes an efficient strategy to realize high recoverable energy-storage density and efficiency, but also provide an candidate material for application of advanced pulsed power capacitors.