Issue 32, 2024

Design and synthesis of organic radical functionalized vanadium pentoxide towards long-life aqueous zinc ion batteries

Abstract

The V2O5 cathode material has attracted considerable attention for rechargeable aqueous zinc-ion batteries (ZIBs) owing to the rich redox chemistry of vanadium. However, the cycling performance of the V2O5 cathode is still hampered by the sluggish Zn2+ diffusion kinetics. Herein, we employed a facile “two-in-one” strategy to fabricate organic radical functionalized V2O5 (V2O5-TEMPO) via selecting 2,2,6,6-tetramethylpiperidine 1-oxyl (TEMPO) as the nitroxide monomer and riveting it onto V2O5 and we applied it as the cathode of rechargeable aqueous zinc-ion batteries. Benefitting from the large specific area and the porous structure of V2O5-TEMPO cathode materials, V2O5-TEMPO achieved a large specific capacity of 327.4 mA h g−1 at 0.1 A g−1 and impressive cycling performance with a capacity retention of 90.8% after 5500 cycles at 2.0 A g−1. In addition, the reversible storage mechanism of Zn2+ was further studied by using kinetic analysis and density functional theory (DFT) calculations. This work provides key insights into the design and fabrication of organic radical compound-based cathode materials for constructing high-performance rechargeable aqueous multivalent ion batteries.

Graphical abstract: Design and synthesis of organic radical functionalized vanadium pentoxide towards long-life aqueous zinc ion batteries

Supplementary files

Article information

Article type
Paper
Submitted
14 5 2024
Accepted
05 7 2024
First published
05 7 2024

J. Mater. Chem. A, 2024,12, 21050-21057

Design and synthesis of organic radical functionalized vanadium pentoxide towards long-life aqueous zinc ion batteries

J. Zhao, H. Lu, L. Wang, K. Zhang, Y. Gao, S. Deng, X. Liu, C. Zhu and B. Xu, J. Mater. Chem. A, 2024, 12, 21050 DOI: 10.1039/D4TA03354J

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