Method for producing a negative electrode, negative electrode, galvanic cell, and uses of the galvanic cell

A method for producing a negative electrode for a galvanic cell, comprising the steps of

• (a) providing a planar metal structure selected from the group consisting of metal foil, expanded metal, perforated metal, metal mesh and combinations thereof, wherein the planar metal structure has a planar upper side and a planar lower side and has a certain height in a direction perpendicular to the upper side and lower side, wherein the metal structure is not made of lithium metal;
• (b) applying a coating to the upper side of the metal structure, the coating comprising a polymer and/or ceramic particles;
• (c) applying a planar upper side of a planar metallic collector to the lower side of the metal structure, wherein the metallic collector has a planar lower side and has a certain height in a direction perpendicular to the upper side and lower side which is at most as great as the height of the metal structure, wherein the metallic collector has a plurality of openings at least on the upper side;
• and
• (d) pressing the metallic collector over a certain distance, which corresponds at least partially to the height of the metallic collector, into the metal structure by exerting mechanical pressure on the lower side of the metallic collector, whereby the openings of the metallic collector fill with metal of the metal structure at least along the certain distance.

A negative electrode for a galvanic cell, comprising

• (i) a planar metal structure selected from the group consisting of metal foil, expanded metal, perforated metal, metal mesh and combinations thereof, wherein the metal structure has a planar upper side and a planar lower side and has a certain height in a direction perpendicular to the upper side and lower side, wherein the metal structure is not made of lithium metal;
• (ii) a coating applied to the upper side of the metal structure, the coating comprising a polymer and/or ceramic particles;
• and
• (iii) a planar metallic collector, wherein the metallic collector has a planar upper side and planar lower side and has a certain height in a direction perpendicular to the upper side and lower side which is at most as great as the height of the metal structure, wherein the metallic collector has a plurality of openings at least on the upper side;
• wherein the metallic collector is embedded in the metal structure over a certain distance from the lower side of the metal structure towards the upper side of the metal structure, wherein the certain distance corresponds at least partially to the height of the metallic collector and wherein openings of the metallic collector are filled with metal of the metal structure at least along the certain distance.