Nitrogen Doped Carbon Coated Bi Microspheres as High-performance Anode for Half and Full Sodium Ion Batteries |
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| Authors: | Hao Ma Tianyi Wang Jiabao Li Jian Yang Zhigang Liu Na Wang Dr. Dawei Su Prof. Chengyin Wang |
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| Affiliation: | 1. The College of Chemistry and Chemical Engineering, Yangzhou University, 180 Si-Wang-Ting Road, Yangzhou, 225002 P. R. China;2. Centre for Clean Energy Technology, School of Mathematical and Physical Sciences, Faculty of Science, University of Technology Sydney, City Campus, Broadway, Sydney, NSW 2007 Australia |
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| Abstract: | As two-dimensional (2D) materials, bismuth (Bi) has large interlayer spacing along c-axis (0.395 nm) which provides rich active sites for sodium ions, thus guaranteeing high sodium ion storage activity. However, its poor electrical conductivity, combined with its degraded cycling performance, restricts its practical application. Herein, Bi microsphere coated with nitrogen-doped carbon (Bi@NC) was synthesized. Owing to the unique Bi crystals and nitrogen-doped carbon layer, the obtained Bi@NC anode exhibited satisfactory cycling stability and superior rate capability. Moreover, after assembling Bi@NC anode with Na3V2(PO4)3@C cathode to full battery, excellent sodium storage performance was obtained (57 mA h g−1 after 2000 cycles at 1.0 A g−1). |
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| Keywords: | Sodium-ion batteries Anode material Bi Full batteries |
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