Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1291571 | Journal of Power Sources | 2007 | 5 Pages |
Abstract
Using the electrochemical–hydrothermal method, Al-substituted MnO2 materials with α- or γ-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 AlIII allows obtaining “interconnected nanowires” of Mn1−yAlyO2−δ with very high surface areas. The lithium insertion properties of the Al-substituted γ-MnO2 materials are discussed by comparison to non substituted ones.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
E. Machefaux, A. Verbaere, D. Guyomard,