The dissociation degree of the lithium salt also seems to affect the morphology of the Li 2 O 2 deposits. Thus, a "bottom-up" Li 2 O 2 precipitation mechanism operates with highly dissociated Li salts, such as LiTFSI in low-DN glymes, forming a thin layer of the product that cover the surface till the electrons cannot penetrate further and the discharge process stops. On contrary, for highly associated salts, such as LiNO 3 in diglyme, a "top-down" precipitation mechanism that expands in all directions takes place, leading to large deposits. However, since the degree of the lithium salt association depends on a balance between the interaction of the Li + ions with the solvent and the counteranion, it is not straightforward to predict the type of deposit that can be formed in a LOB under a given choice of salt and solvent.