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Fabrication of SnS2/Mn2SnS4/Carbon Heterostructures for Sodium-Ion Batteries with High Initial Coulombic Efficiency and Cycling Stability
- Source :
- ACS Nano. 13:3666-3676
- Publication Year :
- 2019
- Publisher :
- American Chemical Society (ACS), 2019.
-
Abstract
- SnS2 has been extensive studied as an anode material for sodium storage owing to its high theoretical specific capacity, whereas the unsatisfied initial Coulombic efficiency (ICE) caused by the partial irreversible conversion reaction during the charge/discharge process is one of the critical issues that hamper its practical applications. Hence, heterostructured SnS2/Mn2SnS4/carbon nanoboxes (SMS/C NBs) have been developed by a facial wet-chemical method and utilized as the anode material of sodium ion batteries. SMS/C NBs can deliver an initial capacity of 841.2 mAh g–1 with high ICE of 90.8%, excellent rate capability (752.3, 604.7, 570.1, 546.9, 519.7, and 488.7 mAh g–1 at the current rate of 0.1, 0.5, 1.0, 2.0, 5.0, and 10.0 A g–1, respectively), and long cycling stability (522.5 mAh g–1 at 5.0 A g–1 after 500 cycles). The existence of SnS2/Mn2SnS4 heterojunctions can effectively stabilize the reaction products Sn and Na2S, greatly prevent the coarsening of nanosized Sn0, and enhance reversible conver...
- Subjects :
- Fabrication
Conversion reaction
Materials science
Sodium
General Engineering
General Physics and Astronomy
chemistry.chemical_element
Heterojunction
02 engineering and technology
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
0104 chemical sciences
Anode
chemistry
Chemical engineering
General Materials Science
0210 nano-technology
Cycling
Carbon
Faraday efficiency
Subjects
Details
- ISSN :
- 1936086X and 19360851
- Volume :
- 13
- Database :
- OpenAIRE
- Journal :
- ACS Nano
- Accession number :
- edsair.doi...........444da038294688fdbc78c9d8926ce8a9