Issue 17, 2024

MoS2 nanosheets coupled on Ti3C2Tx prepared by molten salt etching for enhancing lithium storage performance

Abstract

Molybdenum disulfide (MoS2) has great potential as an anode material for lithium-ion batteries due to its graphite-like layered structure and high specific capacity (669.0 mA h g−1). However, challenges such as volume expansion during lithium storage have impeded its utilization. The combined alteration of MoS2 and MXenes has demonstrated its efficacy as a modification technique. In this study, a green and facile phase engineering strategy has been implemented for the synthesis of MoS2/Ti3C2Tx nanocomposites. Ti3C2Tx was rapidly prepared by the fluorine-free molten salt etching method, and then the MoS2/Ti3C2Tx composite was synthesized by the one-pot method. Fluffy and open petal-like interconnect structures were constructed by combining few-layer MoS2 nanosheets with Ti3C2Tx substrate. The introduction of the substrate material (Ti3C2Tx) provides a uniform growth platform for MoS2 nanosheets, and Ti3C2Tx, acting as the supporting material, imparts enhanced structural stability to the composite. Theoretical calculations indicate that this configuration may result in a reduction of the diffusion energy barrier of Li+ from 0.78 eV to 0.19 eV, as well as an enhanced electron transfer. This composite material exhibits enhanced capacity performance, achieving 460.6 mA h g−1 at 0.1 A g−1 after 100 cycles. This approach offers valuable insights into the synthesis of additional high-performance composite materials.

Graphical abstract: MoS2 nanosheets coupled on Ti3C2Tx prepared by molten salt etching for enhancing lithium storage performance

Supplementary files

Article information

Article type
Research Article
Submitted
10 May 2024
Accepted
02 Jul 2024
First published
03 Jul 2024

Mater. Chem. Front., 2024,8, 2905-2913

MoS2 nanosheets coupled on Ti3C2Tx prepared by molten salt etching for enhancing lithium storage performance

S. Wang, C. Qu, X. Wang, D. Lin, T. Cao, G. Huang, S. Xu and J. Ye, Mater. Chem. Front., 2024, 8, 2905 DOI: 10.1039/D4QM00388H

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