Flower-like MoSe2@N-doped carbon sub-nanoclusters regulated by MoO3 hexagonal prism as advanced anode for lithium-ion battery
| Autor: | Junjie Cai, Min Yonggang, Chen Miaoling, Liu Yidong, Liao Songyi, Wang Lingzhi, Xing-Wen Huang, Cao Jingru |
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| Rok vydání: | 2021 |
| Předmět: |
Hexagonal prism
Materials science Mechanical Engineering Metals and Alloys chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Lithium-ion battery 0104 chemical sciences Anode Nanoclusters Chemical engineering chemistry Transition metal Mechanics of Materials Electrode Materials Chemistry Lithium 0210 nano-technology Carbon |
| Zdroj: | Journal of Alloys and Compounds. 865:158276 |
| ISSN: | 0925-8388 |
| DOI: | 10.1016/j.jallcom.2020.158276 |
| Popis: | Carbon-coated transition metal dihalide composite materials have shown favorable performance for lithium ion batteries. Herein, 3D flower-like MoSe2@N-doped carbon sub-nanocluster (MoSe2@NC SNCs) with uniform size ~500 nm was successfully synthesized using the pre-made MoO3 hexagonal prisms as the regulator, Se powder and PDA as raw materials through a simple self-assembly method followed by annealing treatment. The as-synthesized MoSe2@NC SNCs composite was characterized by XRD, XPS, SEM and TEM analyses. When fabricated into coin-cells with the counter of Li metal, the MoSe2@NC SNCs anode exhibited enhanced Li storage properties compared to the larger MoSe2@NC MPs electrode without MoO3 regulator, including better rate performance of 480 mA h/g at current density of 4.0 A/g and cycling stability of 501 mA h/g after 320 cycles at high current density of 2.0 A/g. Therefore, the MoSe2@NC SNCs composite may be one of the promising anode candidate materials for constructing LIBs. Furthermore, the strategy of controlling the size of MoSe2@N-doped carbon by adding its pre-treated transition metal oxides may also guide the controllable synthesis of other similar electrode materials. |
| Databáze: | OpenAIRE |
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