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Embedding Heterostructured α‐MnS/MnO Nanoparticles in S‐Doped Carbonaceous Porous Framework as High‐Performance Anode for Lithium‐Ion Batteries

Ma, Yuan 1; Ma, Yanjiao 1; Diemant, Thomas; Cao, Kecheng; Kaiser, Ute; Behm, R. Jürgen 1; Varzi, Alberto 1; Passerini, Stefano 1
1 Karlsruher Institut für Technologie (KIT)

In this work, the synthesis of α-MnS/MnO/S-doped C micro-rod composites via a simple sulfidation process is demonstrated, starting from a Mn-based metal-organic framework. The resulting heterostructured α-MnS/MnO nanoparticles (8±2 nm) are uniformly embedded into the S-doped carbonaceous porous framework with hierarchical micro-/meso-porosity. The combination of structural and compositional characteristics results in the promising electrochemical performance of the as-obtained composites as anode materials for lithium-ion batteries, coupled with high reversible capacity (940 mAh $g^{−1}$ at 0.1 A $g^{−1}$), excellent rate capability as well as long cycling lifespan at high rate of 2.0 A $g^{−1}$ for 2000 cycles with the eventual capacity of ∼300 mAh $g^{−1}$. Importantly, in situ X-ray diffraction studies clearly reveal mechanistic details of the lithium storage mechanism, involving multistep conversion processes upon initial lithiation.

Verlagsausgabe §
DOI: 10.5445/IR/1000135343
Veröffentlicht am 14.07.2021
DOI: 10.1002/celc.202100110
Zitationen: 11
Web of Science
Zitationen: 12
Zitationen: 11
Cover der Publikation
Zugehörige Institution(en) am KIT Helmholtz-Institut Ulm (HIU)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 01.03.2021
Sprache Englisch
Identifikator ISSN: 2196-0216, 2196-0216
KITopen-ID: 1000135343
HGF-Programm 38.02.01 (POF IV, LK 01) Fundamentals and Materials
Erschienen in ChemElectroChem
Verlag Wiley-VCH Verlag
Band 8
Heft 5
Seiten 918–927
Vorab online veröffentlicht am 15.02.2021
Nachgewiesen in Scopus
Web of Science
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