Journal
NANOMATERIALS
Volume 10, Issue 12, Pages -Publisher
MDPI
DOI: 10.3390/nano10122558
Keywords
SnO2; self-assembly; MoS2; nanosheets; lithium-ion battery
Categories
Funding
- National Research Foundation of Korea (NRF) - Korean government (MSIT) [NRF-2020R1F1A1048335]
- Basic Science Research Capacity Enhancement Project through a Korea Basic Science Institute (National Research Facilities and Equipment Center) - Ministry of Education [2019R1A6C1010016]
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SnO2 nanoparticles (NPs) have been used as reversible high-capacity anode materials in lithium-ion batteries, with reversible capacities reaching 740 mAh center dot g(-1). However, large SnO2 NPs do not perform well in charge-discharge cycling. In this work, we report the incorporation of MoS2 nanosheet (NS) layers with SnO2 NPs. SnO2 NPs of similar to 5 nm in diameter synthesized by a facile hydrothermal precipitation method. Meanwhile, MoS2 NSs of a few hundreds of nanometers to a few micrometers in lateral size were produced by top-down chemical exfoliation. The self-assembly of the MoS2 NS layer on the gas-liquid interface was first demonstrated to achieve up to 80% coverage of the SnO2 NP anode surface. The electrochemical properties of the pure SnO2 NPs and MoS2-covered SnO2 NP anodes were investigated. The results showed that the SnO2 electrode with a single-layer MoS2 NS film exhibited better electrochemical performance than the pure SnO2 anode in lithium storage applications.
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