Статья

2D Heterolayer-Structured MoSe<sub>2</sub>-Carbon with Fast Kinetics for Sodium-Ion Capacitors

Huifen PengSchool of Materials Science & Engineering and Tianjin Key Laboratory of Materials Laminating Fabrication and Interface Control Technology, Hebei University of Technology, Tianjin300130, ChinaShuangbin HanSchool of Materials Science & Engineering and Tianjin Key Laboratory of Materials Laminating Fabrication and Interface Control Technology, Hebei University of Technology, Tianjin300130, ChinaJiamin ZhaoSchool of Materials Science & Engineering and Tianjin Key Laboratory of Materials Laminating Fabrication and Interface Control Technology, Hebei University of Technology, Tianjin300130, ChinaOlga Klimova-KorsmikWorld-class Research Center “Advanced Digital Technologies”, State Marine Technical University, Saint Petersburg190121Russian FederationО. В. ТолочкоPeter the Great St. Petersburg Polytechnic University, Saint Petersburg195251, Russian FederationMirtemir Shodievich KurbanovInstitute of Ion-Plasma and Laser Technologies Named After U.A. Arifov, Tashkent100125, UzbekistanChengwei ZhangSchool of Materials Science & Engineering and Tianjin Key Laboratory of Materials Laminating Fabrication and Interface Control Technology, Hebei University of Technology, Tianjin300130, ChinaPuguang JiSchool of Materials Science & Engineering and Tianjin Key Laboratory of Materials Laminating Fabrication and Interface Control Technology, Hebei University of Technology, Tianjin300130, ChinaGongkai WangSchool of Materials Science & Engineering and Tianjin Key Laboratory of Materials Laminating Fabrication and Interface Control Technology, Hebei University of Technology, Tianjin300130, China

Inorganic Chemistryjournal2023en

ABI

Аннотация

Two-dimensional (2D) layered MoSe2 has been demonstrated to be a promising electrode material for new energy storage systems. However, its nature of poor conductivity and the undesirable interlayer spacing hinder its further application. In this paper, a general and simple plasma-enhanced chemical vapor deposition method is proposed to produce 2D heterolayer-structured MoSe2-carbon (MoSe2/C) with carbon atoms inserted in the MoSe2 layers. After morphology optimization, when applying flat-type MoSe2/C-200 nanosheets with an enlarged interlayer spacing of 0.79 nm as the anode and activated carbon as the cathode, the assembled sodium-ion hybrid capacitors can reach a maximum energy/power density of 116.5 W h kg–1/107.5 W kg–1 and exhibit superior cycling durability (91.3% capacitance retention after 4000 cycles at 1 A g–1). The good electrochemical property can be ascribed to the enlarged interlayer spacing that can offer fast diffusion channels for Na ions, and the carbon layer sandwiched in the MoSe2 layer can not only enhance the electron transfer, accelerating the reaction kinetics, but also alleviate the volume change of MoSe2, ensuring the good stability of the electrode. The proposed approach can also be extended to other 2D transition metal chalcogenide (TMC) materials for constructing the TMC/C heterostructures for the application in energy storage systems.

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Темы

Advancements in Battery Materials Supercapacitor Materials and Fabrication Graphene research and applications

Идентификаторы

DOI: 10.1021/acs.inorgchem.2c03819

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