Barium titanate-based energy-storage dielectric ceramics have attracted great attention due to their environmental friendliness and outstanding ferroelectric properties. Here, we demonstrate that a recoverable energy density of 2.51 J cm and a giant energy efficiency of 86.89% can be simultaneously achieved in 0.92BaTiO-0.08KBiNbO ceramics. In addition, excellent thermal stability (25-100 °C) and superior frequency stability (1-100 Hz) have been obtained under 180 kV cm. The first-order reversal curve method and transmission electron microscopy measurement show that the introduction of KBiNbO makes ferroelectric domains to transform into highly dynamic polar nanoregions (PNRs), leading to the concurrently enhanced energy-storage properties by the transition from ferroelectric to relaxor ferroelectric (RFE). Furthermore, it is confirmed by piezoresponse force microscopy that the appearance of PNRs breaks the long-range order to some extent and reduces the stability of the microstructure, which explains the excellent energy-storage performance of RFE ceramics. Therefore, this work has promoted the practical application ability of BaTiO-based energy-storage dielectric ceramics.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/acsami.9b10819 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Engineering Air-Stable Triarylmethyl Radicals with One Pyrrole Ring.
Org Lett
January 2025
School of Chemistry, Engineering Research Center of Energy Storage Materials and Devices, Ministry of Education, Xi'an Jiaotong University, Xi'an 710049, China.
Herein, seven air-stable triarylmethyl radicals (-), each featuring a pyrrole ring, were successfully synthesized. A comprehensive investigation into the linkages at the α-, β-, and -positions of the pyrrole ring, along with various substituents, revealed that the p-π conjugation between the central radical carbon and the pyrrole ring plays a crucial role in the distribution of spin density and overall stability. Notably, radicals to displayed excellent electrochemical and photostability.
View Article and Find Full Text PDFAdvanced Alkali Metal Batteries based on MOFs and Their Composites.
ChemSusChem
January 2025
Yangzhou University, College of Chemistry and Chemical Engineering, Siwangting road, NO.180, 225002, Yangzhou, CHINA.
The integration of metal-organic frameworks (MOFs) with functional materials has established a versatile platform for a wide range of energy storage applications. Due to their large specific surface area, high porosity, and tunable structural properties, MOFs hold significant promise as components in energy storage systems, including electrodes, electrolytes, and separators for alkali metal-ion batteries (AIBs). Although lithium-ion batteries (LIBs) are widely used, their commercial graphite anode materials are nearing their theoretical capacity limits, and the scarcity of lithium and cobalt resources increases costs.
View Article and Find Full Text PDFSchiff Base-Mediated Dual Active Site Catalyst for Efficient N-Formylation of Amines with CO.
J Phys Chem Lett
January 2025
School of Chemistry, Dalian University of Technology, Dalian 116024, Liaoning, China.
Using CO as the C1 source for N-formylation of amine is a crucial energy-storage pathway to address the greenhouse effect while generating high-value-added chemicals but is limited by the activation of inert molecules. Herein, a dual active site catalyst with high CO activation and dihydrogen dissociation capacity was fabricated by incorporating a Schiff base and Au nanoparticles (NPs) on silicon dioxide (SiO). The modification of the Schiff base not only provides an alkaline environment for CO absorption but also stabilizes Au NPs in a small and highly dispersed state, which regulates the electronic density of the metal for excellent H cleavage.
View Article and Find Full Text PDFAlbizia procera-Derived Nitrogen-Doped Carbon for Advanced Energy Conversion, Storage, and Environmental Technologies.
Chem Asian J
January 2025
King Fahd University of Petroleum & Minerals, Center of Research excellence in Nanotechnology, KFUPM Box # 81, 31261, Dhahran, SAUDI ARABIA.
This review explores the diverse applications of nitrogen-doped carbon derived from Albizia procera, known as white siris. Native to the Indian subcontinent and tropical Asia, this species thrives in varied conditions, contributing to sustainable development. The nitrogen-rich leaves of Albizia procera are an excellent source for synthesizing nitrogen-doped carbon, which possesses remarkable properties for advanced technologies.
View Article and Find Full Text PDFBoron and defects co-doped MXene enables high-performance Na-Se batteries.
J Colloid Interface Sci
December 2024
Henan Institute of Advanced Technology, Zhengzhou University, Zhengzhou, Henan 450003, PR China.
Sodium selenium (Na-Se) batteries are considered promising candidates for next-generation energy storage devices due to their high volumetric energy density. However, the Se cathode still faces the problems of the shuttling effect and sluggish selenium reduction kinetics. Improving the surface adsorption and catalytic process of selenium cathode can greatly solve the above issues and achieve excellent performance to enhance the application of Na-Se batteries.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!