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Issue 32, 2018
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K2V6O16·2.7H2O nanorod cathode: an advanced intercalation system for high energy aqueous rechargeable Zn-ion batteries

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Abstract

1D nanorods of the layered material K2V6O16·2.7H2O (KVO) are implemented for the first time as cathode materials in secondary aqueous rechargeable Zn-ion batteries (ARZIBs) and exhibit excellent electrochemical Zn storage properties. This cathode material delivers a reversible capacity of 296 mA h g−1 over 100 cycles. At current densities of 1000, 3000, and 5000 mA g−1 for 700 cycles, the electrode displays reversible capacities of 223, 177, and 138 mA h g−1, for approximately 170, 300, and 230 cycles, respectively. In addition to these properties, it withstands over 500 cycles at an applied current density of 6000 mA g−1 with nearly 82% capacity retention. The battery offers a specific energy of 128 Wh kg−1 at a specific power of 5760 W kg−1, revealing the advantages of the material in an eco-friendly atmosphere.

Graphical abstract: K2V6O16·2.7H2O nanorod cathode: an advanced intercalation system for high energy aqueous rechargeable Zn-ion batteries

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Supplementary files

Article information


Submitted
03 Mar 2018
Accepted
19 Jul 2018
First published
19 Jul 2018

J. Mater. Chem. A, 2018,6, 15530-15539
Article type
Communication

K2V6O16·2.7H2O nanorod cathode: an advanced intercalation system for high energy aqueous rechargeable Zn-ion batteries

B. Sambandam, V. Soundharrajan, S. Kim, M. H. Alfaruqi, J. Jo, S. Kim, V. Mathew, Y. Sun and J. Kim, J. Mater. Chem. A, 2018, 6, 15530
DOI: 10.1039/C8TA02018C

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