Efficient sulfur host based on yolk-shell iron oxide/sulfide-carbon nanospindles for lithium-sulfur batteries
- Numerous nanostructured materials have been reported as efficient sulfur hosts to suppress the problematic "shuttling" of lithium polysulfides (LiPSs) in lithium-sulfur (Li-S) batteries. However, direct comparison of these materials in their efficiency of suppressing LiPSs shuttling is challenging, owing to the structural and morphological differences between individual materials. This study introduces a simple route to synthesize a series of sulfur host materials with the same yolk-shell nanospindle morphology but tunable compositions (Fe3O4, FeS, or FeS2), which allows for a systematic investigation into the specific effect of chemical composition on the electrochemical performances of Li-S batteries. Among them, the S/FeS2-C electrode exhibits the best performance and delivers an initial capacity of 877.6 mAh g(-1) at 0.5 C with a retention ratio of 86.7 % after 350 cycles. This approach can also be extended to the optimization of materials for other functionalities and applications.
Author details: | Dongjiu XieORCiDGND, Shilin MeiGND, Yaolin Xu, Ting QuanGND, Eneli Haerk, Zdravko KochovskiORCiD, Yan LuORCiDGND |
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DOI: | https://doi.org/10.1002/cssc.202002731 |
ISSN: | 1864-5631 |
ISSN: | 1864-564X |
Pubmed ID: | https://pubmed.ncbi.nlm.nih.gov/33440068 |
Title of parent work (English): | ChemSusChem : chemistry, sustainability, energy, materials |
Publisher: | Wiley-VCH |
Place of publishing: | Weinheim |
Publication type: | Article |
Language: | English |
Date of first publication: | 2021/01/13 |
Publication year: | 2021 |
Release date: | 2023/11/27 |
Tag: | batteries; electrode materials; lithium sulfides; nanostructures; yolk-shell |
Volume: | 14 |
Issue: | 5 |
Number of pages: | 10 |
First page: | 1404 |
Last Page: | 1413 |
Funding institution: | Humboldt Research Fellowship for Postdoctoral Researchers from the Alexander von Humboldt Foundation; CSC scholarship; Projekt DEAL |
Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Chemie |
DDC classification: | 5 Naturwissenschaften und Mathematik / 54 Chemie / 540 Chemie und zugeordnete Wissenschaften |
Peer review: | Referiert |
Publishing method: | Open Access / Hybrid Open-Access |
License (German): | CC-BY - Namensnennung 4.0 International |