NaV6O15 microflowers as a stable cathode material for high-performance aqueous zinc-ion batteries |
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Authors: | Runxia Li Chao Guan Xiaofei Bian Xin Yu Fang Hu |
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Institution: | School of Materials Science and Engineering, Dongguan University of Technology, Dongguan 523808 China ; School of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870 China, |
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Abstract: | Reversible aqueous zinc-ion batteries (ZIBs) have great potential for large-scale energy storage owing to their low cost and safety. However, the lack of long-lifetime positive materials severely restricts the development of ZIBs. Herein, we report NaV6O15 microflowers as a cathode material for ZIBs with excellent electrochemical performance, including a high specific capacity of ∼300 mA h g−1 at 100 mA g−1 and 141 mA h g−1 maintained after 2000 cycles at 5 A g−1 with a capacity retention of ∼107%. The high diffusion coefficient and stable tunneled structure of NaV6O15 facilitate Zn2+ intercalation/extraction and long-term cycle stability.NaV6O15 microflowers were synthesized as a stable cathode material for aqueous zinc ion batteries, which show a high specific capacity and excellent long-term cycling performance. |
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