Self-Assembled Few-Layered MoS2 on SnO2 Anode for Enhancing Lithium-Ion Storage
- Authors
- Nguyen, T.P.; Kim, Il Tae
- Issue Date
- Dec-2020
- Publisher
- MDPI
- Keywords
- Lithium-ion battery; MoS2; Nanosheets; Self-assembly; SnO2
- Citation
- NANOMATERIALS, v.10, no.12, pp.1 - 13
- Journal Title
- NANOMATERIALS
- Volume
- 10
- Number
- 12
- Start Page
- 1
- End Page
- 13
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/79712
- DOI
- 10.3390/nano10122558
- ISSN
- 2079-4991
- Abstract
- SnO2 nanoparticles (NPs) have been used as reversible high-capacity anode materials in lithium-ion batteries, with reversible capacities reaching 740 mAh·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 ~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. © 2020 by the authors. Licensee MDPI, Basel, Switzerland.
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