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
| Autor: | Jin-Hwan Park, Seongyong Park, Kwangjin Park, Youhwan Son, Dongjin Yoon, Suk-Gi Hong, Jaegu Yoon, Jung-Hwa Kim, Jun-Ho Park, Soonchul Kwon, Hyunjin Kim |
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| Rok vydání: | 2016 |
| Předmět: |
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) |
| Zdroj: | Electrochimica Acta. 222:830-837 |
| ISSN: | 0013-4686 |
| DOI: | 10.1016/j.electacta.2016.11.044 |
| Popis: | 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 ( |
| Databáze: | OpenAIRE |
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