The exploration of advanced MoS2-based electrode materials overcoming their inherent low conductivity and large volume changes is of importance for next-generation energy storage.In this work,we report a simple and high-efficient one-pot hydrothermal approach to prepare a unique and stable 1D/2D het-erostructure.In the architecture,ultrathin carbon layer-coated MoS2 nanosheets with large expanded in-terlayer of 1.02 nm are vertically grown onto the Ti3C2 MXene and cross-linked carbon nanotubes(CNTs),giving rise to a highly conductive 3D network.The interlayer expanded MoS2 nanosheets can greatly facil-itate the Na ions/electrons transmission.Meanwhile,the N-doped 1D/2D CNTs-Ti3C2 matrix can be used as a strong mechanical support to well relieve the large volume expansion upon cycles.As a combination result of several advantages,the developed quaternary C-MoS2/CNTs-Ti3C2 composite anode shows an ex-cellent sodium storage performance(562 mA h g-1 at 100 mA g-1 after 200 cycles)and rate capability(475 mA h g-1 at 2000 mA g-1).The density functional theory calculations further prove that the full combination of layer-expanded MoS2 nanosheets and N-doped Ti3C2 matrix can significantly enhance the adsorption energy of Na ions,further resulting in the enhancement of sodium storage capabilities.

Fengyi He;Cheng Tang;Yadong Liu;Haitao Li;Aijun Du;Haijiao Zhang

Institute of Nanochemistry and Nanobiology,Shanghai University,Shanghai 200444,China;School of Chemistry,Physics and Mechanical Engineering,Science and Engineering Faculty,Queensland University of Technology,Brisbane,QLD 4001,Australia

材料科学技术（英文版）

[1]Fengyi He;Cheng Tang;Yadong Liu;Haitao Li;Aijun Du;Haijiao Zhang-.Carbon-coated MoS2 nanosheets@CNTs-Ti3C2 MXene quaternary composite with the superior rate performance for sodium-ion batteries)[J].材料科学技术（英文版）,2022(05):101-109

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