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

Lin, Ling ; Wang, Kai ; Sarkar, Abhishek ; Njel, Christian ; Karkera, Guruprakash ; Wang, Qingsong ; Azmi, Raheleh ; Fichtner, Maximilian ; Hahn, Horst ; Schweidler, Simon ; Breitung, Ben (2022):
High‐Entropy Sulfides as Electrode Materials for Li‐Ion Batteries. (Publisher's Version)
In: Advanced Energy Materials, 12 (8), Wiley-VCH, e-ISSN 1614-6840,
DOI: 10.26083/tuprints-00021540,
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Item Type: Article
Origin: Secondary publication DeepGreen
Status: Publisher's Version
Title: High‐Entropy Sulfides as Electrode Materials for Li‐Ion Batteries
Language: English
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.

Journal or Publication Title: Advanced Energy Materials
Volume of the journal: 12
Issue Number: 8
Place of Publication: Darmstadt
Publisher: Wiley-VCH
Collation: 11 Seiten
Uncontrolled Keywords: high‐entropy materials, high‐entropy sulfides, lithium batteries, mechanochemical synthesis
Classification DDC: 600 Technik, Medizin, angewandte Wissenschaften > 600 Technik
600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Joint Research Laboratory Nanomaterials
Date Deposited: 01 Jul 2022 11:38
Last Modified: 26 Sep 2022 07:58
DOI: 10.26083/tuprints-00021540
Corresponding Links:
URN: urn:nbn:de:tuda-tuprints-215409
SWORD Depositor: Deep Green
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/21540
PPN: 499643674
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