TY - JOUR
T1 - Tailoring high-energy storage NaNbO3-based materials from antiferroelectric to relaxor states
AU - Zhang, Mao-Hua
AU - Ding, Hui
AU - Egert, Sonja
AU - Zhao, Changhao
AU - Villa, Lorenzo
AU - Fulanovic, Lovro
AU - Groszewicz, Pedro B.
AU - Buntkowsky, Gerd
AU - Kleebe, Hans-Joachim
AU - Albe, Karsten
AU - Klein, Andreas
AU - Koruza, Jurij
N1 - Funding: This work was supported by the Hessian State Ministry for Higher Education, Research and the Arts under the LOEWE collaborative project FLAME (Fermi level engineering of antiferroelectric materials for energy-storage and insulation systems). P.G. acknowledges financial support by the Dutch Research Council (NWO) for the ECCM Tenure Track funding under project number ECCM.006. We acknowledge DESY (Hamburg, Germany), a member of the Helmholtz Association HGF, for the provision of experimental facilities. Parts of this research were carried out at PETRA III using beamline P02.1. Beamtime was allocated for proposal I-20210563. We additionally acknowledge the European Synchrotron Radiation Facility (ESRF). Parts of this research was carried out at the beamline ID15 under proposal number MA 4993.
PY - 2023/3/18
Y1 - 2023/3/18
N2 - Reversible field-induced phase transitions define antiferroelectric perovskite oxides and lay the foundation for high-energy storage density materials, required for future green technologies. However, promising new antiferroelectrics are hampered by transition's irreversibility and low electrical resistivity. Here, we demonstrate an approach to overcome these problems by adjusting the local structure and defect chemistry, delivering NaNbO3-based antiferroelectrics with well-defined double polarization loops. The attending reversible phase transition and structural changes at different length scales are probed by in situ high-energy X-ray diffraction, total scattering, transmission electron microcopy, and nuclear magnetic resonance spectroscopy. We show that the energy-storage density of the antiferroelectric compositions can be increased by an order of magnitude, while increasing the chemical disorder transforms the material to a relaxor state with a high energy efficiency of 90%. The results provide guidelines for efficient design of (anti-)ferroelectrics and open the way for the development of new material systems for a sustainable future.
AB - Reversible field-induced phase transitions define antiferroelectric perovskite oxides and lay the foundation for high-energy storage density materials, required for future green technologies. However, promising new antiferroelectrics are hampered by transition's irreversibility and low electrical resistivity. Here, we demonstrate an approach to overcome these problems by adjusting the local structure and defect chemistry, delivering NaNbO3-based antiferroelectrics with well-defined double polarization loops. The attending reversible phase transition and structural changes at different length scales are probed by in situ high-energy X-ray diffraction, total scattering, transmission electron microcopy, and nuclear magnetic resonance spectroscopy. We show that the energy-storage density of the antiferroelectric compositions can be increased by an order of magnitude, while increasing the chemical disorder transforms the material to a relaxor state with a high energy efficiency of 90%. The results provide guidelines for efficient design of (anti-)ferroelectrics and open the way for the development of new material systems for a sustainable future.
U2 - 10.1038/s41467-023-37060-4
DO - 10.1038/s41467-023-37060-4
M3 - Article
C2 - 36934123
SN - 2041-1723
VL - 14
JO - Nature Communications
JF - Nature Communications
M1 - 1525
ER -