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High-Entropy Sulfides as Electrode Materials for Li-Ion Batteries

Title data

Lin, Ling ; Wang, Kai ; Sarkar, Abhishek ; Njel, Christian ; Karkera, Guruprakash ; Wang, Qingsong ; Azmi, Raheleh ; Fichtner, Maximilian ; Hahn, Horst ; Schweidler, Simon ; Breitung, Ben:
High-Entropy Sulfides as Electrode Materials for Li-Ion Batteries.
In: Advanced Energy Materials. Vol. 12 (2022) Issue 8 . - No. 2103090.
ISSN 1614-6840

Official URL: Volltext

Project information

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Project's official title
Project's id
Nachwuchsgruppe Lehrstuhl für Anorganische Aktivmaterialien electrochemischer Speicher Dr. Qingsong Wang
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Abstract in another language

Abstract High-entropy sulfides (HESs) containing 5 equiatomic transition metals (M), with different M:S ratios, are prepared by a facile one-step mechanochemical approach. Two new types of single-phase HESs with pyrite (Pa-3) and orthorhombic (Pnma) structures are obtained and demonstrate a homogeneously mixed solid solution. The straightforward synthesis method can easily tune the desired metal to sulfur ratio for HESs with different stoichiometries, by utilizing the respective metal sulfides, even pure metals, and sulfur as precursor chemicals. The structural details and solid solution nature of HESs are studied by X-ray diffraction, transmission electron microscopy, energy-dispersive X-ray spectroscopy, electron energy loss spectroscopy, X-ray photoelectron spectroscopy, inductively coupled plasma optical emission spectroscopy, and Mössbauer spectroscopy. Since transition metal sulfides are a very versatile material class, here the application of HESs is presented as electrode materials for reversible electrochemical energy storage, in which the HESs show high specific capacities and excellent rate capabilities in secondary Li-ion batteries.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: high-entropy materials; high-entropy sulfides; lithium batteries; mechanochemical synthesis
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Lehrstuhl Anorganische Aktivmaterialien für elektrochemische Energiespeicher
Research Institutions > Research Centres > Bayerisches Zentrum für Batterietechnik - BayBatt
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: No
DDC Subjects: 500 Science
500 Science > 500 Natural sciences
500 Science > 540 Chemistry
600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 02 Nov 2022 09:04
Last Modified: 02 Nov 2022 09:04