Nitrogen and oxygen co-doping carbon microspheres by a sustainable route for fast sodium-ion batteries
| Autor: | Decai Qin, Xiaogang Zhang, Zhanying Liu, Yanzhang Zhao, Fang Zhang, Jiaxin Xu |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Carbonization Graphene General Chemical Engineering chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Nitrogen Oxygen 0104 chemical sciences Anode law.invention chemistry Chemical engineering law Specific surface area Electrochemistry 0210 nano-technology Porosity Carbon |
| Zdroj: | Electrochimica Acta. 303:140-147 |
| ISSN: | 0013-4686 |
| Popis: | Heteroatom-doping has been regarded as an effective strategy to regulate the Na storage performance of carbon materials. In this paper, N and O dual-doped carbon microspheres (NO-CS) from the rinds of corn stalks have been fabricated via a tailored carbonization and solution doping route. NO-CS reveals both high O (15.6 at.%), N (6.4 at.%) contents and high specific surface area (746.48 m2 g−1). The NO-CS derived carbon anode shows tremendous reversible capacity, rate capability and cycling stability, e.g. 270 mAh g−1 over 200 cycles at 50 mA g−1, 130 mAh g−1 over 3500 cycles at 5 A g−1. The superior Na storage property may due to the abundant porosity and dual-doping that boost fast ion adsorption at the graphene layer defects and nitrogen oxygen moiety of carbon. Scalable and cost-effective synthesis route with outstanding Na storage performance makes NO-CS a competitive anode material for Na-ion batteries. |
| Databáze: | OpenAIRE |
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