A facile preparation method and proof of cycle-stability of carbon-coated metal oxide and disulfide battery materials
Constructing composites of metal oxides and disulfides with carbonaceous materials is considered a useful approach to improve their lithium-ion storage performance. However, complicated synthesis processes and high-cost carbonaceous materials usually used hinder the commercialization of such composi...
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| Main Authors: | , , , , , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
16 May 2023
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| In: |
Electrochimica acta
Year: 2023, Volume: 459, Pages: 1-10 |
| ISSN: | 1873-3859 |
| DOI: | 10.1016/j.electacta.2023.142540 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1016/j.electacta.2023.142540 Verlag, lizenzpflichtig, Volltext: https://www.sciencedirect.com/science/article/pii/S0013468623007181 
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| Author Notes: | Peng Guo, Lennart Singer, Zhiyong Zhao, Wojciech Kukułka, Finn Sebastian, Ewa Mijowska, Michael Zharnikov, Peter Comba, Rüdiger Klingeler |
| Summary: | Constructing composites of metal oxides and disulfides with carbonaceous materials is considered a useful approach to improve their lithium-ion storage performance. However, complicated synthesis processes and high-cost carbonaceous materials usually used hinder the commercialization of such composites. Here, as an example, carbon-coated tungsten oxides and disulfides are prepared using a facile and simple method on the basis of two kinds of low-cost carbon sources (CTAB and PVP). Following our postulated synthesis route, a variety of carbon-coated WOx, WS2, as well as mixed-phase WOx-WS2 is presented. The CTAB-assisted WOx/C (c-WOx/C), WS2/C (c-WS2/C), and mixed-phase (c-WOx/C-WS2/C) electrodes exhibit outstanding capacity retention of 74%, 99%, and 95%, respectively, which still have 420 mAh g−1, 460 mAh g−1, and 525 mAh g−1 capacity left after 200 cycles at 100 mA g−1. Particularly, the c-WS2/C electrode exhibits superior long-term cycle stability of 97% retention after 500 cycles. Similarly, the PVP-assisted WS2/C (p-WS2/C) electrode displays a capacity retention of 80% after 500 cycles. This work provides an easy and versatile route to fabricate carbon-coated tungsten oxides and disulfides with compelling battery performance and can be easily implemented for other metal oxides and disulfides. |
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| Item Description: | Online verfügbar 12. Mai 2023, Artikelversion 16. Mai 2023 Gesehen am 28.06.2023 |
| Physical Description: | Online Resource |
| ISSN: | 1873-3859 |
| DOI: | 10.1016/j.electacta.2023.142540 |