Crystal water assisting MoS2 nanoflowers for reversible zinc storage
| Autor: | Qianzheng Jin, Haomiao Li, Ruxing Wang, Kai Jiang, Wei Li, Kangli Wang, Zhuchan Zhang, Jie Yan, Pingyuan Feng |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Aqueous solution Mechanical Engineering Metals and Alloys chemistry.chemical_element 02 engineering and technology Zinc 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Cathode 0104 chemical sciences Ion law.invention Chemical kinetics Crystal chemistry Transition metal Chemical engineering Mechanics of Materials law Electrode Materials Chemistry 0210 nano-technology |
| Zdroj: | Journal of Alloys and Compounds. 872:159599 |
| ISSN: | 0925-8388 |
| DOI: | 10.1016/j.jallcom.2021.159599 |
| Popis: | As a special group of two-dimensional layered compounds, transition metal dichalcogenides (TMDs) have attracted great attentionfor rechargeable zinc ion batteries (ZIBs). However, the large zinc ion radius, the strong electrostatic interaction with the host material, and the slow dynamics of Zn2+ limit the application of TMDs in rechargeable aqueous ZIBs. Herein, MoS2·nH2O is synthesized through a facile hydrothermal reaction. The unique nanoscale flower structure combined with the introduction of crystal water can reduce the electrostatic interaction between zinc ion and skeleton, promote the diffusion of zinc ion, and effectively accelerate the reaction kinetics. Benefiting from the above advantages, the MoS2·nH2O electrode exhibits a high rate capacity and satisfactory cyclability (88% capacity retention after 800 cycles at 2 A g−1). The excellent performance of MoS2·nH2O proves that the introduction of crystal water is a practical strategy to promote the hydration kinetics of large-size multivalent ions, which may provide a viable and attractive solution for the synthesis of other cathode materials for aqueous ZIBs. |
| Databáze: | OpenAIRE |
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