A coated three-dimensional electronically conductive network (1) for acting as an electrode in a metal or metal-ion battery wherein the metal is selected from the list consisting of Na, K, Li, Ca, Mg, and Al, comprising: (i) a three-dimensional electronically conductive network (10) comprising a plurality of interconnected electronically conductive wires, wherein the three-dimensional electronically conductive network (10) has a porosity of at least 60% and a volumetric surface area of from 10-3 m2/cm3 to 100 m2/cm3, and (ii) an electronically insulating coating (11) conformally covering all surfaces of the network (10), and being permeable and/or conductive to ions of the metal at at least one temperature in the range of from -30°C to 150°C.