Assessment on the use of high capacity 'Sn4P3'/NHC composite electrodes for sodium-ion batteries with ether and carbonate electrolytes
| العنوان: | Assessment on the use of high capacity 'Sn4P3'/NHC composite electrodes for sodium-ion batteries with ether and carbonate electrolytes |
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| المؤلفون: | Martin Winter, Ivana Hasa, Thangavelu Palaniselvam, Stefano Passerini, A. L. Santhosha, Kilian Pollok, Falko Langenhorst, Richard Schmuch, Charan Mukundan, Mustafa Goktas, Hyein Moon, Philipp Adelhelm, Mirco Ruttert |
| المصدر: | Advanced functional materials, 30 (42), Art.-Nr.: 2004798 |
| بيانات النشر: | Wiley-VCH Verlag, 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Technology, Materials science, anode, volume expansion, diglyme, high capacity, in situ XRD, sodium-ion battery, tin phosphide, 02 engineering and technology, Electrolyte, Natrium-Ionen-Akkumulator, 010402 general chemistry, Electrochemistry, 01 natural sciences, Chemical reaction, Diethylenglykoldimethylether, Biomaterials, chemistry.chemical_compound, X-ray photoelectron spectroscopy, ddc:530, Anodes, Sodium ion batteries, 620 Ingenieurwissenschaften und zugeordnete Tätigkeiten, Sodium-ion battery, Diglyme, 530 Physik, 021001 nanoscience & nanotechnology, Condensed Matter Physics, 0104 chemical sciences, Electronic, Optical and Magnetic Materials, Amorphous solid, 540 Chemie und zugeordnete Wissenschaften, chemistry, ddc:540, Electrode, Physical chemistry, ddc:620, 0210 nano-technology, ddc:600 |
| الوصف: | This work reports the facile synthesis of a Sn–P composite combined with nitrogen doped hard carbon (NHC) obtained by ball-milling and its use as electrode material for sodium ion batteries (SIBs). The “Sn$_{4}$P$_{3}$”/NHC electrode (with nominal composition “Sn$_{4}$P$_{3}$”:NHC = 75:25 wt%) when coupled with a diglyme-based electrolyte rather than the most commonly employed carbonate-based systems, exhibits a reversible capacity of 550 mAh g$_{electrode}$$^{−1}$ at 50 mA g$^{−1}$ and 440 mAh g$_{electrode}$$^{−1}$ over 500 cycles (83% capacity retention). Morphology and solid electrolyte interphase formation of cycled “Sn$_{4}$P$_{3}$”/NHC electrodes is studied via electron microscopy and X-ray photoelectron spectroscopy. The expansion of the electrode upon sodiation (300 mAh g$_{electrode}$$^{−1}$) is only about 12–14% as determined by in situ electrochemical dilatometry, giving a reasonable explanation for the excellent cycle life despite the conversion-type storage mechanism. In situ X-ray diffraction shows that the discharge product is Na$_{15}$Sn$_{4}$. The formation of mostly amorphous Na$_{3}$P is derived from the overall (electro)chemical reactions. Upon charge the formation of Sn is observed while amorphous P is derived, which are reversibly alloying with Na in the subsequent cycles. However, the formation of Sn$_{4}$P$_{3}$ can be certainly excluded. |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 1057-9257 1099-0712 1616-301X 1616-3028 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::df7e3f3f0c690489bb6bbb176b230ce6 http://hdl.handle.net/11573/1600484 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....df7e3f3f0c690489bb6bbb176b230ce6 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 10579257 10990712 1616301X 16163028 |
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