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Tuning Pseudocapacitance via C–S Bonding in WS2 Nanorods Anchored on N,S Codoped Graphene for High-Power Lithium Batteries
- Source :
- ACS Applied Materials & Interfaces. 10:13606-13613
- Publication Year :
- 2018
- Publisher :
- American Chemical Society (ACS), 2018.
-
Abstract
- Pseudocapacitance plays an important role in high-power lithium-ion batteries (LIBs). However, it is still lack of effective methods to tailor the pseudocapacitance contribution in electrode materials for LIBs. Herein, pseudocapacitance tuned by the strength of C–S bonding has been rendered in WS2 nanorods anchored on the N,S codoped three-dimensional graphene hybrid (WS2@N,S-3DG) for the first time. The pseudocapacitive contributions in the charge storage can be enhanced effectively with the increased strength of C–S bonding. As expected, the enhanced extrinsic pseudocapacitance makes WS2@N,S-3DG a fascinating electrode material for high-power LIBs, with a high reversible capacity of 509 mA h g–1 over 500 cycles at a current density as high as 2 A g–1. These encouraging results of pseudocapacitance tailored by chemical bonding provide new opportunities for designing advanced electrode materials.
- Subjects :
- Electrode material
Materials science
Graphene
chemistry.chemical_element
Nanotechnology
02 engineering and technology
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
Pseudocapacitance
0104 chemical sciences
law.invention
chemistry
Chemical bond
law
General Materials Science
Lithium
Nanorod
0210 nano-technology
Current density
Subjects
Details
- ISSN :
- 19448252 and 19448244
- Volume :
- 10
- Database :
- OpenAIRE
- Journal :
- ACS Applied Materials & Interfaces
- Accession number :
- edsair.doi...........bdf3a5bde3604debc631772c90fcae8d
- Full Text :
- https://doi.org/10.1021/acsami.8b02506