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Porcher, W., Moreau, P., Lestriez, B., Jouanneau, S. & Guyomard, D. (2008) Is LiFePO4 stable in water? Toward greener li-ion batteries. Electrochem. Solid State Lett. 11 A4–A8.
Added by: Laurent Cournède (2016-03-10 21:58:42) |
| Type de référence: Article DOI: 10.1149/1.2795833 Numéro d'identification (ISBN etc.): 1099-0062 Clé BibTeX: Porcher2008a Voir tous les détails bibliographiques  |
Catégories: ST2E Mots-clés: Anode, Binder, cell performance, cellulose, Electrochemical performance, licoo2 cathodes, Lithium batteries, negative electrodes, paa-nh4, spectroscopy Créateurs: Guyomard, Jouanneau, Lestriez, Moreau, Porcher Collection: Electrochem. Solid State Lett. |
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The stability of LiFePO4 in water was investigated. From high-resolution transmission electron microscopy observation, electron energy-loss spectroscopy analyses, Mossbauer experiments, and chemical analyses, we showed that a Li3PO4 layer is present at the LiFePO4 grains surface after immersion in water. This layer, which is a few nanometers thick, is accompanied by an increase of the Fe-III percentage in the grains and a continuous dissolution of the layer. If experimental conditions such as immersion time, pH, and LiFePO4 concentration are set to optimal values, the transition to an aqueous route for preparing LiFePO4-based positive electrodes could, in fact, be achieved. (C) 2007 The Electrochemical Society.
Added by: Laurent Cournède |