Lead‐Free Antiferroelectric Silver Niobate Tantalate with High Energy Storage Performance

By Lei Zhao, Qing Liu, Jing Gao, Shujun Zhang, Jingfeng Li. Advances in Materials, 2017

770 citations recorded by the source corpus.

Antiferroelectric materials that display double ferroelectric hysteresis loops are receiving increasing attention for their superior energy storage density compared to their ferroelectric counterparts. Despite the good properties obtained in antiferroelectric La‐doped Pb(Zr,Ti)O3‐based ceramics, lead‐free alternatives are highly desired due to the environmental concerns, and AgNbO3 has been highlighted as a ferrielectric/antiferroelectric perovskite for energy storage applications. Enhanced energy storage performance, with recoverable energy density of 4.2 J cm−3 and high thermal stability of the energy storage density (with minimal variation of ≤±5%) over 20–120 °C, can be achieved in Ta‐modified AgNbO3 ceramics. It is revealed that the incorporation of Ta to the Nb site can enhance the antiferroelectricity because of the reduced polarizability of B‐site cations, which is confirmed by the polarization hysteresis, dielectric tunability, and selected‐area electron diffraction measurements. Additionally, Ta addition in AgNbO3 leads to decreased grain size and increased bulk density, increasing the dielectric breakdown strength, up to 240 kV cm−1 versus 175 kV cm−1 for the pure counterpart, together with the enhanced antiferroelectricity, accounting for the high energy storage density.

Subfields: Electronic, Optical and Magnetic Materials, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/15f7c9353ceac90af2b9946c639d6e1eb1a7fab6

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Electronic, Optical and Magnetic Materials

1. Fei Li
2. Hanxing Liu
3. H. Hao
4. Shujun Zhang
5. Dejun Li
6. A. Feteira
7. Dawei Wang
8. I. Reaney

In Materials Chemistry

1. Shujun Zhang
2. Fei Li
3. Dawei Wang
4. Hanxing Liu
5. H. Hao
6. I. Reaney
7. A. Feteira
8. Yu Huang

Citations in the corpus

• (Bi0.51 Na0.47)TiO3 based lead free ceramics with high energy density and efficiency (2019, background): “However, due to the environmental regulation, lead-free electronic materials are the mainstay research topic in recent years for numerous applications, including the energy storage application [11].”
• Mechanism of enhanced energy storage density in AgNbO3-based lead-free antiferroelectrics (2021, background): “For Ta doped samples, Pmax and Pr decrease since the polarizability of Ta is lower than Nb [25], but the increase in Pmax for x = 0.”