Graphite–FeSi alloy composites as anode materials for rechargeable lithium batteries

Investigation of CrSi2 and MoSi2 as anode materials for lithium-ion batteries

“…This gives rise to mechanical stresses that lead to cracks and eventual disintegration of the electrode and a failure of the battery [5]. Intermetallic compounds, such as silicides M-Si (with M: Mg [6][7][8], Mn [2,9], Mo [10], Fe [9,11], Ni [12], Nb, Ta, V, Ca, Cr [13,14], and Ti) [1] were first reported by Anani and Huggins as anode materials for Liion batteries [14], especially Mg 2 Si [6] and CrSi 2 [14]. Since, more work have been performed on silicon and silicon-metal alloys; on this regard, two interesting reviews have recently been published on the subject by Park et al [15] and Larcher et al [2].…”

NixSi1-xAlloys Prepared by Mechanical Milling as Negative Electrode Materials for Lithium Ion Batteries

“…When made by sputtering or ball milling, such alloys typically form active Si / inactive matrix nanostructured composites, where the inactive matrix comprises a transition metal silicide. 3,7,[10][11][12][13][14][15][16][17][18][19][20][21] Although transition metal silicides are theoretically active with lithium from a thermodynamic basis, 10 most have been found to be completely inactive or have very limited capacity at room temperature. 3,[12][13][14][15][16][17] For instance, Fleischauer et al used a model based on effective heats of formation to explain the capacity behavior of (Fe, Mn, Cr+Ni, Co)-Si alloys.…”

Failure Modes of Silicon Powder Negative Electrode in Lithium Secondary Batteries

“…[5][6][7] For the second problem, Si powders were fabricated as a composite with conductive carbon, metal or ceramic materials. [8][9][10][11][12][13][14][15] The prime concern in this work is the identification of failure modes in Si powder negative electrodes. It is likely that the failure modes are deeply related with severe volume change and poor conductivity.…”