Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 6, Issue 10, Pages 7084-7089Publisher
AMER CHEMICAL SOC
DOI: 10.1021/am4060222
Keywords
nanosheets; MoS2; sodium-ion battery; liquid-phase exfoliation; layered materials
Funding
- Nano-Material Technology Development Program [2012M3A7B4049807]
- Global Frontier Research Center for Advanced Soft Electronics [2011-0031640]
- Basic Research Program of ETRI [13ZE1110]
- LG Display Co., Ltd.
- Ministry of Science, ICT & Future Planning, Republic of Korea [KINC01] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [2011-0031640, 10Z20130011056, 2012M3A7B4049807] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Two-dimensional (2D) molybdenum disulfide (MoS2) has been taken much attention for various applications, such as catalyst, energy storage, and electronics. However, the lack of effective exfoliation methods for obtaining 2D materials in a large quantity has been one of the technical barriers for the real applications. We report a facile liquid-phase exfoliation method to improve the exfoliation efficiency for single-layer MoS2 sheets in 1-methyl-2-pyrrolidinone (NMP) with a sodium hydroxide (NaOH) assistant. The concentration of the exfoliated MoS2 nanosheets was greatly improved compared to that achieved with conventional liquid-phase exfoliation methods using NMP solvent. We demonstrate stable operation of sodium-ion battery by using the exfoliated MoS2 and MoS2-rGO composite as anode materials.
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