Machefaux, E., Verbaere, A. & Guyomard, D. (2007) Aluminum substituted manganese oxides for lithium battery applications. J. Power Sources, 165 625–629.
Added by: Laurent Cournède (2016-03-10 22:02:30) |
Type de référence: Article DOI: 10.1016/j.jpowsour.2006.10.030 Numéro d'identification (ISBN etc.): 0378-7753 Clé BibTeX: Machefaux2007 Voir tous les détails bibliographiques |
Catégories: ST2E Mots-clés: alpha, aluminum substitution, beta, electrochemical synthesis, gamma-mno2, insertion behavior, li batteries, Manganese dioxides, nanowires, structural defects Créateurs: Guyomard, Machefaux, Verbaere Collection: J. Power Sources |
Consultations : 1/608
Indice de consultation : 4% Indice de popularité : 1% |
Résumé |
Using the electrochemical-hydrothermal method, Al-substituted MnO2 materials with alpha- or gamma-structures or mixtures of these phases have been synthesized. The Al-substituted materials are highly disordered and are characterized by a large amount of microtwinning defects compared to non substituted ones synthesized under the same conditions. The effect of the presence of aluminum on the physico-chemical, structural and morphological properties are presented. The presence of Al-III allows obtaining "interconnected nanowires" of Mn1-yAlyO2-delta with very high surface areas. The lithium insertion properties of the Al-substituted gamma-MnO2 materials are discussed by comparison to non substituted ones. (c) 2006 Elsevier B.V. All rights reserved.
Added by: Laurent Cournède |