Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 6, Issue 32, Pages 15530-15539Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8ta02018c
Keywords
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Funding
- Global Frontier Program through the Global Frontier Hybrid Interface Materials (GFHIM) of the National Research Foundation of Korea (NRF) - Ministry of Science, ICT AMP
- Future Planning [2013M3A6B1078875]
- National Research Foundation of Korea (NRF) grant - Korea government (MSIP) [2017R1A2A1A17069397]
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1D nanorods of the layered material K(2)V(6)O(16)2.7H(2)O (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.
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