Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9760366 | Journal of Power Sources | 2005 | 4 Pages |
Abstract
MSb (M = Ni, Co, Fe, Mn) alloys with a NiAs type structure were synthesized by ceramic route and evaluate as a negative electrode material for rechargeable lithium batteries. Electrochemical tests demonstrated that initial charge and discharge capacities of this materials were ca. 390 and 330 mAh gâ1, respectively. Ex situ XRD of MnSb electrodes showed that LiMnSb and Li3Sb were successively formed during lithium insertion. The 121Sb Mössbauer spectra show that the insertion mechanism during discharge involves the formation of several lithium-containing compounds such as LiMnSb, Li3Sb with manganese extrusion. During the subsequent charge a more complex mechanism occurs involving MnSb, modified LiMnSb alloy and metallic Sb formation.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Costana Mihaela Ionica, Pierre Emmanuel Lippens, Josette Olivier Fourcade, Jean-Claude Jumas,