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We synthesize and characterize a rechargeable aluminum battery cathode material composed of heterostructured CoSe/ZnSe embedded in a hollow carbon matrix. This heterostructure is synthesized from a metal-organic framework composite, in which ZIF-8 is grown on the surface of ZIF-67 cube. Both experimental and theoretical studies indicate that the internal electric field across the heterostructure interface between CoSe and ZnSe promotes the fast transport of electron and Al-ion diffusion. As a result, the heterostructured CoSe/ZnSe demonstrates superior specific capacity and cycle stability compared to the single-phase CoSe and ZnSe cathode materials.
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http://dx.doi.org/10.1021/acsami.2c23205 | DOI Listing |
Nano Lett
August 2025
College of Physics, Qingdao University, Qingdao, Shandong 266071, China.
The diffusion kinetics of trivalent aluminum ions in intercalated cathode materials is impeded, significantly impeding the advancement of rechargeable Al batteries. We propose a strategy for the enhancement of Al diffusion kinetics through the incorporation of Li, aimed at improving the Al-storage properties in model MoS material. By modulating the Li concentration (1-8 wt %) in a room-temperature ionic-liquid electrolyte, we elucidate its correlation with the overall electrochemical performance.
View Article and Find Full Text PDFJ Phys Chem C Nanomater Interfaces
August 2025
Center for Sustainable Materials Processing, School of Chemistry, University of Leicester, Leicester LE1 7RH, U.K.
Rechargeable aluminum-ion batteries remain an important technological target as an alternative to lithium. Here, acidic room-temperature ionic liquid analogue electrolytes (ILAs) were synthesized from guanidine hydrochloride salt (GuanHCl) and aluminum chloride, with varying metal-to-salt (AlCl/GuanHCl) ratios, and were characterized for their potential application in aluminum-ion batteries. The rheological properties of these electrolytes, including viscosity and electrical conductivity, were determined.
View Article and Find Full Text PDFChemSusChem
August 2025
Department of Materials Chemistry, National Institute of Chemistry, Ljubljana, 1001, Slovenia.
In recent years, Al metal organic batteries have attracted significant interest due to their promise of sustainability and high volumetric energy densities, while being based on abundant materials. However, many studies assess their performance with insufficient rigor, often emphasizing high capacity and power performance, as well as cycling stability at very high cycling rates. Herein, the feasibility of a highly stable β-ketoenamine-linked anthraquinone-based covalent organic framework (DAAQ-TFP-COF) for rechargeable Al batteries is reassessed.
View Article and Find Full Text PDFNano Lett
August 2025
Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD 4072, Australia.
Separators are essential for safe and efficient battery operation. Polyolefin separators like polyethylene (PE) are widely used in lithium-ion batteries but are incompatible with strongly polar electrolytes, such as chloroaluminate ionic liquids in rechargeable aluminum batteries (RABs). Glass fiber (GF) membranes are commonly used in RABs due to good wettability, but their excessive thickness, mechanical fragility, and nonuniform macropores limit practicality.
View Article and Find Full Text PDFFront Chem
July 2025
School of Mechanical and Electrical Engineering, Jiaxing Nanhu University, Jiaxing, China.
Rechargeable aluminum-ion batteries (AIBs), as novel energy storage systems featuring low-cost, high-energy density, and superior safety, demonstrate promising potential as a next-generation battery technology. However, the lack of high-performance cathode materials remains a critical barrier to practical implementation. In this study, highly crystalline cobalt sulfide (CoS) nanoparticles were synthesized using a one-step hydrothermal method and systematically evaluated their electrochemical performance and energy storage mechanisms in AIBs.
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