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Induced AlF3 segregation for the generation of reciprocal Al2O3 and LiF coating layer on self-generated LiMn2O4 surface of over-lithiated oxide based Li-ion battery
- Source :
- Electrochimica Acta. 222:830-837
- Publication Year :
- 2016
- Publisher :
- Elsevier BV, 2016.
-
Abstract
- For Li-ion batteries, AlF3 coating has been known to modify the over-lithiated layered oxide (OLO) cathodes to produce stable cathodes, but during synthesis procedure, the environment of excess amount of Li metal and free-exposed oxygen may cause the formation of Al2O3 and LiF materials, separately. We investigated the possibility of separated coating formation of Al as Al2O3 and F as LiF from AlF3 using density functional theory calculation, which suggests a favorable binding affinity of both Al2O3 and LiF phases to the OLO surface to support the preferable formation of coating layer of Al2O3 and LiF. Meanwhile, we found the well-distributed surface modification with the coating layers and a small amount of AlF3 (
- Subjects :
- Materials science
General Chemical Engineering
Inorganic chemistry
Oxide
02 engineering and technology
Electrolyte
engineering.material
010402 general chemistry
021001 nanoscience & nanotechnology
Electrochemistry
01 natural sciences
Cathode
0104 chemical sciences
law.invention
chemistry.chemical_compound
Coating
chemistry
law
Phase (matter)
engineering
Surface modification
0210 nano-technology
Layer (electronics)
Subjects
Details
- ISSN :
- 00134686
- Volume :
- 222
- Database :
- OpenAIRE
- Journal :
- Electrochimica Acta
- Accession number :
- edsair.doi...........04d86ff319f977ced2c737668aed4864