Red-phosphorus-impregnated carbon nanofibers for sodium-ion batteries and liquefaction of red phosphorus
| Autor: | Kai He, Tom Nilges, Yihang Liu, Chongwu Zhou, Dingzhou Cui, Zhen Li, Qingzhou Liu, Cheng Jian, Zheng Jia, Teng Li, Mingrui Chen |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Silicon Energy science and technology Sodium Science Volume variation General Physics and Astronomy chemistry.chemical_element 02 engineering and technology 010402 general chemistry Electrochemistry 01 natural sciences Article General Biochemistry Genetics and Molecular Biology Nanoscience and technology lcsh:Science Multidisciplinary Carbon nanofiber Liquefaction General Chemistry 021001 nanoscience & nanotechnology 0104 chemical sciences Anode In situ transmission electron microscopy chemistry Chemical engineering lcsh:Q 0210 nano-technology |
| Zdroj: | Nature Communications, Vol 11, Iss 1, Pp 1-8 (2020) Nature Communications |
| ISSN: | 2041-1723 |
| Popis: | Red phosphorus offers a high theoretical sodium capacity and has been considered as a candidate anode for sodium-ion batteries. Similar to silicon anodes for lithium-ion batteries, the electrochemical performance of red phosphorus is plagued by the large volume variation upon sodiation. Here we perform in situ transmission electron microscopy analysis of the synthesized red-phosphorus-impregnated carbon nanofibers with the corresponding chemo-mechanical simulation, revealing that, the sodiated red phosphorus becomes softened with a “liquid-like” mechanical behaviour and gains superior malleability and deformability against pulverization. The encapsulation strategy of the synthesized red-phosphorus-impregnated carbon nanofibers has been proven to be an effective method to minimize the side reactions of red phosphorus in sodium-ion batteries, demonstrating stable electrochemical cycling. Our study provides a valid guide towards high-performance red-phosphorus-based anodes for sodium-ion batteries. Red phosphorus is a promising anode for Na-ion batteries but suffers from large volume change upon cycling. Here the authors show a red-phosphorus-impregnated carbon nanofiber design in which the sodiated red phosphorus is featured by a “liquid-like” behavior and ultra-stable electrochemical performance is realized. |
| Databáze: | OpenAIRE |
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