| Titre : | Improvement of electrochemical performance of Li[Ni0.8Co0.15Al0.05]O2 cathode materials by AlF3 coating at various temperatures (2008) |
| Auteurs : | Byung-Chun Park, Auteur ; Hyung-Bae Kim, Auteur ; Hyun Joo Bang, Auteur ; Jai Prakash, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Industrial & engineering chemistry research (Vol. 47 n°11, Juin 2008) |
| Article en page(s) : | p. 3876–3882 |
| Note générale : | Bibliogr. p. 3881-3882 |
| Langues : | Anglais |
| Tags : | AlF3 coating ; Electrochemical impedance spectroscopy |
| Résumé : | A thin AlF3 layer of ∼10 nm was uniformly coated on the particle surface of Li[Ni0.8Co0.15Al0.05]O2. The AlF3 coating improved cycle performance at 55, 30, and –10 °C and improved storage characteristics at 60 °C. In studies of differential capacity (dQ/dV) versus voltage, the AlF3-coated Li[Ni0.8Co0.15Al0.05]O2 showed little variation in redox peaks with cycling. Electrochemical impedance spectroscopy suggested that the AlF3 coating played an important role in stabilizing the interface between the cathode and the electrolyte. |
| En ligne : | http://pubs.acs.org/doi/abs/10.1021/ie0715308 |
