On June 19th, Prof. Li Jingfeng of the School of Materials Science and Technology of Tsinghua University published an online article entitled "High-performance silver lead-free antiferroelectric energy storage ceramics" on Advanced Materials. The research paper of Niobate Tantalate with High Energy Storage Performance reported the important progress made by the research group in the research of ferroelectric ceramic energy storage materials. This achievement not only discovered a lead-free antiferroelectric ceramic material with high energy storage density and good temperature stability, but also its research on antiferroelectric enhancement mechanisms for the development of lead-free antiferroelectric energy storage ceramic materials. New ideas. Energy storage materials and devices are the research hotspots in functional materials field in recent years. Among them, high energy storage density and high reliability dielectric energy storage materials have irreplaceable applications in high-energy pulsed power technologies and other fields. In this regard, antiferroelectric energy storage materials with dual hysteresis loop characteristics have attracted much attention, but past research has mainly focused on lead zirconate titanate (Pb(Zr, Ti)O3) systems. Based on the long-term work experience in niobate-based lead-free piezoelectric ceramics, Professor Li Jingfeng's research group conducted research on the antiferroelectricity and energy storage characteristics of silver niobate (AgNbO3) and found that tantalum (Ta) doping can be Regulates the phase transition of AgNbO3, significantly improves the dielectric breakdown strength and antiferroelectricity, and its maximum releasable energy storage density reaches 4.2 J/cm3, which is 260% higher than pure AgNbO3, and can be released within 20-120°C. The change in energy density is maintained within ±5%. The first author of the thesis was Zhao Lei, a postdoctoral student of the Material Institute. The author of the correspondence was Professor Li Jingfeng of the School of Materials Science and Technology of Tsinghua University and Professor Zhang Shujun of the Institute of Innovative Materials of the University of Wollongong, Australia, as the co-corresponding author. This study was supported by the National Natural Science Foundation of China, the 973 Project, and the China Postdoctoral Fund. Digital Curtain Fountain,Digital Fountain,Curtain Fountain,Water Curtain Fountain Guangzhou Dewy water fountain Technology Co., LTD , https://www.dewyfountain.com
Figure 1 The electrical hysteresis loop, releasable energy storage density, and energy efficiency of Ag(Nb1-xTax)O3 ceramics. 
Fig. 2 Microstructure, dielectric breakdown strength, dielectric temperature spectrum and phase diagram of Ag(Nb,Ta)O3 ceramics.