期刊
ACS OMEGA
卷 2, 期 5, 页码 2360-2367出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsomega.7b00379
关键词
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资金
- Japan Society for Promotion of Science (JSPS) [PU15903]
- Funding Program for World-Leading Innovative R&D on Science and Technology (FIRST)
- Core Technology Consortium for Advanced Energy Devices, Tohoku University, Japan
- Japan Science and Technology Agency (JST)
- Grants-in-Aid for Scientific Research [16H01795] Funding Source: KAKEN
The ultrathin two-dimensional nanosheets of layered transition-metal dichalcogenides (TMDs) have attracted great interest as an important class of materials for fundamental research and technological applications. Solution-phase processes are highly desirable to produce a large amount of TMD nanosheets for applications in energy conversion and energy storage such as catalysis, electronics, rechargeable batteries, and capacitors. Here, we report a rapid exfoliation by supercritical fluid processing for the production of MoS2 and MoSe2 nanosheets. Atomic-resolution high-angle annular dark-field imaging reveals high-quality exfoliated MoS2 and MoSe2 nanosheets with hexagonal structures, which retain their 2H stacking sequence. The obtained nanosheets were tested for their electrochemical performance in a hybrid Mg-Li-ion battery as a proof of functionality. The MoS2 and MoSe2 nanosheets exhibited the specific capacities of 81 and 55 mA h g(-1), respectively, at a current rate of 20 mA g(-1).
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