Print Email Facebook Twitter Tailoring high-energy storage NaNbO3-based materials from antiferroelectric to relaxor states Title Tailoring high-energy storage NaNbO3-based materials from antiferroelectric to relaxor states Author Zhang, Mao Hua (Technische Universität Darmstadt) Ding, Hui (Technische Universität Darmstadt) Egert, Sonja (Technische Universität Darmstadt) Zhao, Changhao (Technische Universität Darmstadt) Villa, Lorenzo (Technische Universität Darmstadt) Fulanović, Lovro (Technische Universität Darmstadt) Braga Groszewicz, P. (TU Delft RST/Storage of Electrochemical Energy) Buntkowsky, Gerd (Technische Universität Darmstadt) Kleebe, Hans Joachim (Technische Universität Darmstadt) Date 2023 Abstract 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. To reference this document use: http://resolver.tudelft.nl/uuid:899daa41-72dd-40bc-b6b5-a36d1d22940a DOI https://doi.org/10.1038/s41467-023-37060-4 ISSN 2041-1723 Source Nature Communications, 14 (1) Part of collection Institutional Repository Document type journal article Rights © 2023 Mao Hua Zhang, Hui Ding, Sonja Egert, Changhao Zhao, Lorenzo Villa, Lovro Fulanović, P. Braga Groszewicz, Gerd Buntkowsky, Hans Joachim Kleebe, More Authors Files PDF s41467_023_37060_4.pdf 3.49 MB Close viewer /islandora/object/uuid:899daa41-72dd-40bc-b6b5-a36d1d22940a/datastream/OBJ/view