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[001] preferentially-oriented 2D tungsten disulfide nanosheets as anode materials for superior lithium storage

W. Yang, J. Wang, C. Si, Z. Pemg, J. Frenzel, G. Eggeler, Z. Zhang

Journal of Materials Chemistry A, 3, 17811-17819, (2015)

DOI: 10.1039/C5TA04176G

Download: BibTEX

Rechargeable lithium ion batteries (LIBs) have transformed portable electronics and will play a crucial role in transportation, such as electric vehicles. For higher energy storage in LIBs, two issues should be addressed, that is, the fundamental understanding of the chemistry taking place in LIBs and the discovery of new materials. Here we design and fabricate two-dimensional (2D) WS2 nanosheets with preferential [001] orientation and perfect single crystalline structures. Being used as an anode for LIBs, the WS2-nanosheet electrode exhibits a high specific capacity, good cycling performance and excellent rate capability. Considering the controversy in the lithium storage mechanism of WS2, ex-situ X-ray diffraction (XRD), Raman and X-ray photoelectron spectroscopy (XPS) analyses clearly verify that the recharge product (3.0 V vs. Li+/Li) of the WS2 electrode after fully discharging to 0.01 V (vs. Li+/Li) tends to reverse to WS2. More remarkably, the [001] preferentially-oriented 2D WS2 nanosheets are also promising candidates for applications in photocatalysis, water splitting, and so forth.

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{"type":"article", "name":"w.yang20159", "author":"W. Yang and J. Wang and C. Si and Z. Pemg and J. Frenzel and G. Eggeler and Z. Zhang", "title":"[001] preferentiallyoriented 2D tungsten disulfide nanosheets as anode materials for superior lithium storage", "journal":"Journal of Materials Chemistry A", "volume":"3", "OPTnumber":"34", "OPTmonth":"9", "year":"2015", "OPTpages":"17811-17819", "OPTnote":"", "OPTkey":"", "DOI":"10.1039/C5TA04176G"}
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