Preeminent energy storage properties and superior stability of(Ba_((1-x))Bi_(x))(Ti_((1-x))Mg_(2 x/3)Ta_(x/3))O_(3)relaxor ferroelectric ceramics via elongated rod-shaped grains and domain structural regulation  

作　　者：Ming Yin Ying Zhang Hai-Rui Bai Peng Li Yu-Chao Li Wei-Fang Han Ji-Gong Hao Wei Li Chun-Ming Wang Peng Fu 

机构地区：[1]School of Materials Science and Engineering,Liaocheng University,Liaocheng 252059,China [2]Shandong Laboratory of Yantai Advanced Materials and Green Manufacturing,Yantai 264006,China [3]School of Physics,Shandong University,Jinan 250100,China

出　　处：《Journal of Materials Science & Technology》2024年第17期207-220,共14页材料科学技术（英文版）

基　　金：supported by the Natural Science Foundation of Shandong Province of China(Nos.ZR2020ME035,ZR2020QE043,and ZR2020QE044);National Natural Science Foundation of China(Nos.51872166,52102132,and 52177020);Postdoctoral Science Foundation of China(No.2017M622196);Opening Project of Key Laboratory of Inorganic Functional Materials and Devices,Chinese Academy of Sciences(No.KLIFMD201705).

摘　　要：(Ba_((1-x))Bi_(x))(Ti_((1-x))Mg_(2 x/3)Ta_(x/3))O_(3)(BBTMT-x,x=0.075,0.1,0.125,and 0.15)ceramics were manufactured via a solid-phase reaction method.The pseudo-cubic BaTiO_(3)(BT)as the primary phase and Ba_(4)MgTi_(11)O_(27)as the secondary phase were detected in BBTMT-x ceramics.The elongated rod-shaped grains therein be-came numerous as x increased.The introduction of Bi/Mg/Ta(BMT)elements transformed BT ceramics from ferroelectrics to relaxor ferroelectrics and induced the formation of short-range order polar nanore-gions(PNRs),which were beneficial for the preeminent energy storage properties(ESPs).The highest ESPs(a giant recoverable energy-storage density W_(rec) of 5.97 J cm^(-3)with a high-efficiencyηof 87.4%)were achieved in BBTMT-0.1 ceramics at 710 kV cm^(-1).BBTMT-0.1 ceramics also possessed excellent fre-quency(1-500 Hz),temperature(30-150℃),and fatigue(cycle number of 1-100,000)stabilities.Finite element simulations(FES)demonstrated that elongated rod-shaped grains had stronger obstacles to the development of electrical branches,which was beneficial to improving the comprehensive ESPs.

关 键 词：CERAMICS Relaxor ferroelectrics Energy storage Polar nanoregions STABILITY 

分 类 号：TB383.2[一般工业技术—材料科学与工程]