Direct Studies on the Lithium-Storage Mechanism of Molybdenum Disulfide
| العنوان: | Direct Studies on the Lithium-Storage Mechanism of Molybdenum Disulfide |
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| المؤلفون: | Miao Feng, Gaohui Du, Qingmei Su, Bingshe Xu, Shixin Wang |
| المصدر: | Scientific Reports Scientific Reports, Vol 7, Iss 1, Pp 1-10 (2017) |
| بيانات النشر: | Springer Science and Business Media LLC, 2017. |
| سنة النشر: | 2017 |
| مصطلحات موضوعية: | Multidisciplinary, Materials science, Science, chemistry.chemical_element, 02 engineering and technology, 010402 general chemistry, 021001 nanoscience & nanotechnology, Electrochemistry, 01 natural sciences, Article, 0104 chemical sciences, Anode, Characterization (materials science), chemistry.chemical_compound, Nanocrystal, chemistry, Chemical engineering, Transition metal, Medicine, Lithium, Lamellar structure, 0210 nano-technology, Molybdenum disulfide |
| الوصف: | Transition metal sulfides are regarded as a type of high-performance anode materials for lithium ion batteries (LIBs). However, their electrochemical process and lithium-storage mechanism are complicated and remain controversial. This work is intended to give the direct observation on the electrochemical behavior and find out the lithium-storage mechanism of molybdenum disulfide (MoS2) using in situ transmission electron microscopy (TEM). We find that single-crystalline MoS2 nanosheets convert to Mo nanograins (~2 nm) embedded in Li2S matrix after the first full lithiation. After the delithiation, the Mo nanograins and Li2S transform to a large number of lamellar MoS2 nanocrystals. The discharge-charge cycling of MoS2 in LIBs is found to be a fully reversible conversion between MoS2 and Mo/Li2S rather than the electrochemical conversion between S and Li2S proposed by many researchers. The in situ real-time characterization results give direct evidence and profound insights into the lithium-storage mechanism of MoS2 as anode in LIBs. |
| تدمد: | 2045-2322 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1b7eb082798983795c23e46f6a4b7264Test https://doi.org/10.1038/s41598-017-07648-0Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....1b7eb082798983795c23e46f6a4b7264 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 20452322 |
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