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A2VO(SO4)2 (A = Li, Na) as Electrodes for Li-Ion and Na-Ion Batteries
- Source :
- Chemistry of Materials, Chemistry of Materials, American Chemical Society, 2016, 28 (18), pp.6637-6643. ⟨10.1021/acs.chemmater.6b02759⟩, Chemistry of Materials, 2016, 28 (18), pp.6637-6643. ⟨10.1021/acs.chemmater.6b02759⟩
- Publication Year :
- 2016
- Publisher :
- HAL CCSD, 2016.
-
Abstract
- International audience; We herein report the synthesis, crystal structure, and electrochemical performances of a new Li-based vanadium oxysulfate phase, Li2VO(SO4)2, whose structure is built on vanadyl-containing VO5 square-based pyramids and SO4 groups linked by vertices to form layers. Li2VO(SO4)2 presents a redox activity at 4.7 V vs Li+/Li0 with a reversible capacity of 50 mA·h/g, while the chemically similar but structurally different Na2VO(SO4)2 delivers a capacity of 60 mA h/g at 4.5 V vs Na+/Na0. Density functional theory calculations are also performed to rationalize our findings in terms of redox activity and phase stability.
- Subjects :
- Phase stability
General Chemical Engineering
Vanadium
chemistry.chemical_element
Nanotechnology
02 engineering and technology
General Chemistry
Crystal structure
010402 general chemistry
021001 nanoscience & nanotechnology
Electrochemistry
01 natural sciences
0104 chemical sciences
Ion
Crystallography
chemistry
Phase (matter)
Electrode
Materials Chemistry
[PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci]
Density functional theory
0210 nano-technology
Subjects
Details
- Language :
- English
- ISSN :
- 08974756 and 15205002
- Database :
- OpenAIRE
- Journal :
- Chemistry of Materials, Chemistry of Materials, American Chemical Society, 2016, 28 (18), pp.6637-6643. ⟨10.1021/acs.chemmater.6b02759⟩, Chemistry of Materials, 2016, 28 (18), pp.6637-6643. ⟨10.1021/acs.chemmater.6b02759⟩
- Accession number :
- edsair.doi.dedup.....3276f4f1856b782a6a5798b96cf29ac8