Abstract: A method is provided for forming a porous, electrochemically active lithium manganese oxide layer on a substrate, the method comprising: depositing a porous manganese oxide layer on the substrate; providing a Li containing layer on the porous manganese oxide layer; and afterwards performing an annealing step at a temperature in the range between 200° C. and 400° C., thereby inducing a solid-state reaction between the porous manganese oxide layer and the Li containing layer. The method may further comprise, before depositing the porous manganese oxide layer: depositing a seed layer on the substrate. A method of the present disclosure may be used for forming electrode layers of lithium-ion batteries.

Abstract: A method is provided for fabricating a thin film solid-state Li-ion battery comprising a first electrode layer, a solid electrolyte layer, and a second electrode layer. The method comprises depositing, on a substrate, an initial layer stack comprising a first layer comprising a first electrode material compound, and a second layer comprising an electrolyte material compound; and afterwards performing a lithiation step comprising incorporating Li in the first layer and in the second layer, thereby forming a stack of a first electrode layer and a solid electrolyte layer. The initial layer stack may further comprise a third layer comprising a second electrode material compound. By performing the lithiation step, Li is also incorporated in the third layer, such that a stack of a first electrode layer, a solid electrolyte layer, and a second electrode layer is formed. One or more of the first, second, or third layers may be Li-free.

Abstract: A method is provided for forming a porous, electrochemically active lithium manganese oxide layer on a substrate, the method comprising: depositing a porous manganese oxide layer on the substrate; providing a Li containing layer on the porous manganese oxide layer; and afterwards performing an annealing step at a temperature in the range between 200° C. and 400° C., thereby inducing a solid-state reaction between the porous manganese oxide layer and the Li containing layer. The method may further comprise, before depositing the porous manganese oxide layer: depositing a seed layer on the substrate. A method of the present disclosure may be used for forming electrode layers of lithium-ion batteries.

Abstract: A method is provided for fabricating a thin film solid-state Li-ion battery comprising a first electrode layer, a solid electrolyte layer, and a second electrode layer. The method comprises depositing, on a substrate, an initial layer stack comprising a first layer comprising a first electrode material compound, and a second layer comprising an electrolyte material compound; and afterwards performing a lithiation step comprising incorporating Li in the first layer and in the second layer, thereby forming a stack of a first electrode layer and a solid electrolyte layer. The initial layer stack may further comprise a third layer comprising a second electrode material compound. By performing the lithiation step, Li is also incorporated in the third layer, such that a stack of a first electrode layer, a solid electrolyte layer, and a second electrode layer is formed. One or more of the first, second, or third layers may be Li-free.