High Performance Aluminum Ion Batteries Enabled by the Coordination Between Vanadium-Based PBAs Cathode and Aqueous Eutectic Electrolyte.

ABSTRACT: The practical application of aqueous aluminumion batteries (AAlBs) faced with critical challenges, such as low rate performance and poor cycling stability due to the absence of ideal cathode materials. To address the bottlenecks of low electrochemical activity, structural instability, and narrow voltage window in Prussian blue analogues (PBAs) for AAIBs, this study develops a universal synthesis strategy integrating acid-assisted method with ligand modulation to prepare high-performance vanadium-based PBAs (V-PBAs) cathodes. Through precise coordination environment control, V and Fe/Co/Ni synergistically enhance multi-electron redox activity. Density functional theory calculations reveal that the Fe-doped VFePBA exhibits a narrow bandgap (0.479 eV) and low Al³⁺ migration energy

SUBMITTER: Feng W 

PROVIDER: S-EPMC12622544 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature