Characterization of LiFePO4 / C cathode for lithium Ion batteries / Nathalie Lyczko in Industrial & engineering chemistry research, Vol. 51 N° 1 (Janvier 2012)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 51 N° 1 (Janvier 2012) . - pp. 292–300 Titre : Characterization of LiFePO4 / C cathode for lithium Ion batteries Type de document : texte imprimé Auteurs : Nathalie Lyczko, Auteur ; Ange Nzihou, Auteur ; Patrick Sharrock, Auteur Année de publication : 2012 Article en page(s) : pp. 292–300 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Lithium Ion Batteries Résumé : LiFePO4/C was synthesized from a mixture of different precursors of Li, Fe, and C by solid-state reaction. The initial mixture obtained was heated in different calcination conditions under inert atmosphere. The precursor of LiFePO4 doped with carbon was studied using different techniques such as thermal analysis, chemical and physical characterizations, and Mösbauer spectroscopy. A calculation of the crystallinity of the final product with two different methods is also presented. The chemical analysis techniques used were IRTF, XRD, and SEM. This characterization confirmed that we obtained a well-crystallized LiFePO4/C in all the operating conditions tested. The SEM showed aggregation and sintering during the calcination process, which were confirmed by the particle-size distribution measurements and by the physical characterizations. Mösbauer spectroscopy was used to determine the quantity of Fe(II) and Fe(III) contained in the final product. Our calcination conditions did not significantly modify the quantity of the two oxidation states. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie201799x [article] Characterization of LiFePO4 / C cathode for lithium Ion batteries [texte imprimé] / Nathalie Lyczko, Auteur ; Ange Nzihou, Auteur ; Patrick Sharrock, Auteur . - 2012 . - pp. 292–300. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 1 (Janvier 2012) . - pp. 292–300 Mots-clés : Lithium Ion Batteries Résumé : LiFePO4/C was synthesized from a mixture of different precursors of Li, Fe, and C by solid-state reaction. The initial mixture obtained was heated in different calcination conditions under inert atmosphere. The precursor of LiFePO4 doped with carbon was studied using different techniques such as thermal analysis, chemical and physical characterizations, and Mösbauer spectroscopy. A calculation of the crystallinity of the final product with two different methods is also presented. The chemical analysis techniques used were IRTF, XRD, and SEM. This characterization confirmed that we obtained a well-crystallized LiFePO4/C in all the operating conditions tested. The SEM showed aggregation and sintering during the calcination process, which were confirmed by the particle-size distribution measurements and by the physical characterizations. Mösbauer spectroscopy was used to determine the quantity of Fe(II) and Fe(III) contained in the final product. Our calcination conditions did not significantly modify the quantity of the two oxidation states. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie201799x

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