A method for fabricating an electrode, the method comprising: determining a thickness of an active layer, selecting lithium (Li) foil having a specified thickness from which forming of one or more Li strips; determining widths of the one or more Li strips based on a weight ratio of the active layer to the one or more strips; laminating the active layer onto a conductive substrate; forming one or more grooves in the active layer exposing a bare surface of the conductive substrate; and pressing the one or more Li strips into the one or more grooves, wherein: the said active layer comprising a film layer of a combination of: active materials such as graphite, hard carbon, soft carbon, activated carbon, Lithium salts, Li oxides, silicon; conductive carbon; and a binder; the said weight ratio being in a range of 5:1 to 15:1 widths of the one or more grooves are larger than the widths of the Li strips; the conductive substrate extends along an electrode width direction (width) beyond the active layer width to act as current collector; said widths of the Li strips being defined along the electrode width direction; the one or more Li strips define an electrode thickness direction (thickness) orthogonal to the electrode width direction (width); the active layer defines an electrode length direction (length) orthogonal to the electrode width direction (width) and the electrode thickness direction (thickness), and the one or more Li strips are parallel to the active layer along the electrode length direction (length). determining a thickness of an active layer, selecting lithium (Li) foil having a specified thickness from which forming of one or more Li strips; determining widths of the one or more Li strips based on a weight ratio of the active layer to the one or more strips; laminating the active layer onto a conductive substrate; forming one or more grooves in the active layer exposing a bare surface of the conductive substrate; and pressing the one or more Li strips into the one or more grooves, wherein: the said active layer comprising a film layer of a combination of: active materials such as graphite, hard carbon, soft carbon, activated carbon, Lithium salts, Li oxides, silicon; conductive carbon; and a binder; the said weight ratio being in a range of 5:1 to 15:1 widths of the one or more grooves are larger than the widths of the Li strips; the conductive substrate extends along an electrode width direction (width) beyond the active layer width to act as current collector; said widths of the Li strips being defined along the electrode width direction; the one or more Li strips define an electrode thickness direction (thickness) orthogonal to the electrode width direction (width); the active layer defines an electrode length direction (length) orthogonal to the electrode width direction (width) and the electrode thickness direction (thickness), and the one or more Li strips are parallel to the active layer along the electrode length direction (length). the said active layer comprising a film layer of a combination of: active materials such as graphite, hard carbon, soft carbon, activated carbon, Lithium salts, Li oxides, silicon; conductive carbon; and a binder; the said weight ratio being in a range of 5:1 to 15:1 widths of the one or more grooves are larger than the widths of the Li strips; the conductive substrate extends along an electrode width direction (width) beyond the active layer width to act as current collector; said widths of the Li strips being defined along the electrode width direction; the one or more Li strips define an electrode thickness direction (thickness) orthogonal to the electrode width direction (width); the active layer defines an electrode length direction (length) orthogonal to the electrode width direction (width) and the electrode thickness direction (thickness), and the one or more Li strips are parallel to the active layer along the electrode length direction (length).