Phase-transformation engineering in MoS 2 on carbon cloth as flexible binder-free anode for enhancing lithium storage
| Autor: | Lei Zhang, Yongzhong Wu, Fukun Ma, Gang Zhao, Xiaopeng Hao, Mingzhi Yang, Changlong Sun, Shouzhi Wang, Tailin Wang, Baibiao Huang, Yongliang Shao |
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| Rok vydání: | 2017 |
| Předmět: |
Phase transition
Materials science Mechanical Engineering Metals and Alloys Nanotechnology 02 engineering and technology Nitride 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences Energy storage 0104 chemical sciences Electrochemical cell Anode Transition metal Chemical engineering Mechanics of Materials Electrode Materials Chemistry 0210 nano-technology |
| Zdroj: | Journal of Alloys and Compounds. 716:112-118 |
| ISSN: | 0925-8388 |
| DOI: | 10.1016/j.jallcom.2017.05.071 |
| Popis: | Nanostructured MoS2 is emerging as a prospective material for lithium ion batteries. However, undesirable lattice stress results in inhomogeneous phase change and slow kinetics, which leads to rapid decay of cyclic stability. Initial phase conversion before the electrochemical intercalation can alleviate this problem. Herein, MoS2 nanosheets with partial 2H→1T phase transition under incorporative nitrogen atoms were synthesized controllably on the carbon cloth (CC). The hierarchical self-supporting three-dimensional (3D) 1T@2H MoS2@CC was confirmed and such a freestanding flexible electrode exhibited a significant improvement in the electrochemical characteristics. A strong correlation between such phase transition properties and electrochemical characteristics is established. This work provides an intriguing and effective approach on phase engineering of transition metal dichalcogenides (TMDs) for enhanced electrochemical energy storage. |
| Databáze: | OpenAIRE |
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