Please use this identifier to cite or link to this item: http://hdl.handle.net/10497/22451
Title: 
Authors: 
Keywords: 
Sodium-ion batteries
Molybdenum trioxide
Bismuththiol
Interlayer engineering
High-capacity
Issue Date: 
2020
Citation: 
Wang, B., Ang, E. H., Yang, Y., Zhang, Y. F., Geng, H. B., Ye, M. H., & Li, C. C. (2020). Interlayer engineering of molybdenum trioxide toward high-capacity and stable sodium ion half/full batteries, 30(28), Article 2001708. https://doi.org/10.1002/adfm.202001708
Abstract: 
Orthorhombic molybdenum trioxide (MoO3) is one of the most promising anode materials for sodium‐ion batteries because of its rich chemistry associated with multiple valence states and intriguing layered structure. However, MoO3 still suffers from the low rate capability and poor cycle induced by pulverization during de/sodiation. An ingenious two‐step synthesis strategy to fine tune the layer structure of MoO3 targeting stable and fast sodium ionic diffusion channels is reported here. By integrating partially reduction and organic molecule intercalation methodologies, the interlayer spacing of MoO3 is remarkably enlarged to 10.40 Å and the layer structural integration are reinforced by dimercapto groups of bismuththiol molecules. Comprehensive characterizations and density functional theory calculations prove that the intercalated bismuththiol (DMcT) molecules substantially enhanced electronic conductivity and effectively shield the electrostatic interaction between Na+ and the MoO3 host by conjugated double bond, resulting in improved Na+ insertion/extraction kinetics. Benefiting from these features, the newly devised layered MoO3 electrode achieves excellent long‐term cycling stability and outstanding rate performance. These achievements are of vital significance for the preparation of sodium‐ion battery anode materials with high‐rate capability and long cycling life using intercalation chemistry.
Description: 
This is the final draft, after peer-review, of a manuscript published in Advanced Functional Materials. The published version is available online at https://doi.org/10.1002/adfm.202001708
URI: 
ISSN: 
1616-301X (print)
1616-3028 (online)
Other Identifiers: 
10.1002/adfm.202001708
Website: 
Grant ID: 
National Natural Science Foundation of China (Grant no. 51771058)
National Natural Science Foundation of China (Grant no.51801030)
Natural Science Foundation of Guangdong Providence (Grant No. 2018A030310571)
One-hundred Young Talents (Class A) of Guangdong University of Technology (Grant No. 220413198)
Pearl River Talent Program of Guangdong Province (2017GC010030)
Guangdong Province Universities and Colleges Pearl River Scholar Funded Scheme
Appears in Collections:Journal Articles

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