KETEP 세계에너지시장정보

A polymer electrolyte fuel cell or electrolyser, comprising at least one bipolar plate (1), wherein the bipolar plate comprises a metallic substrate (2) and a layer system (3) applied at least in partial areas of the surface of the substrate (2), wherein the layer system (3) is formed comprising a top layer (3a) and a base layer system (4), wherein the base layer system (4) has at least one first base layer (4a) in the form of a metallic alloy layer comprising the chemical elements titanium and niobium, wherein the base layer system (4) comprises a second base layer (4b) comprising at least one chemical element from the group consisting of titanium, niobium, hafnium, zirconium and tantalum and further comprising at least one non-metallic element from the group nitrogen, carbon, boron and fluorine, and wherein the second base layer (4b) is arranged between the first base layer (4a) and the top layer (3a), wherein the top layer (3a) consists of a homogeneous or heterogeneous solid metallic solution or compound that contains either a first chemical element from the group of noble metals in the form of iridium and further contains at least one further non-metallic chemical element from the group comprising nitrogen, carbon, boron, fluorine and hydrogen, or contains a first chemical element from the group of noble metals in the form of iridium and a second chemical element from the group of noble metals in the form of ruthenium, and also contains at least one further non-metallic chemical element from the group comprising nitrogen, carbon, boron, fluorine and hydrogen.