Sodium storage with high plateau capacity in nitrogen doped carbon derived from melamine–terephthalaldehyde polymers
| Autor: | Ivan K. Ilic, Martin Oschatz, Konstantin Schutjajew, Wuyong Zhang |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
chemistry.chemical_classification
Materials science Renewable Energy Sustainability and the Environment Sodium chemistry.chemical_element 02 engineering and technology General Chemistry Polymer 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences chemistry.chemical_compound chemistry Chemical engineering Plating Degradation (geology) General Materials Science Lithium Graphite 0210 nano-technology Melamine Carbon |
| Zdroj: | Journal of Materials Chemistry A. 9:8711-8720 |
| ISSN: | 2050-7496 2050-7488 |
| Popis: | Sodium, one of the most widespread metals in the earth's crust, can be mined virtually everywhere and holds great promise as an electroactive material batteries to compete with commercial lithium-ion batteries in terms of price and availability. However, sodium, unlike lithium, cannot be intercalated in graphite and therefore there is a need to develop sodium anodes from alternative abundant and low-cost materials. Here we show that one-step carbonisation of melamine–terephthalaldehyde mixtures, both low-cost chemicals available on an industrial scale, yields carbons with promising properties as anodes for sodium-ion batteries. The produced materials apparently contain a large number of small pores, unreachable to gas molecules, which can store sodium (in a quasi-metallic state) as Na(0). The carbon shows plateau behaviour above and below 0 V vs. Na/Na+, with a capacity of up to 170 mA h g−1 until bulk sodium plating occurs. Additionally, for 60 cycles the carbon shows high stability, exhibiting low degradation and efficiencies close to 100%. This report is a first step towards the use of nitrogen-doped carbon materials from low-cost, industrially widespread precursors as anodes for sodium-ion batteries. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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