Electrolysers; electrolytic fuel cells; electrodes, membranes and cell stacks specifically adapted for electrolysers; fuel cell electrodes having electrocatalytic properties; catalyst-coated electrodes forming a single homogenous part; electrodes and fuel cell membranes forming a single homogenous part; electrochemical measuring instruments and apparatus; electrochemical fuel cells; fuel cells; hydrogen fuel cells; fuel cell electrodes; fuel cell membranes; fuel cell stacks; ion beam sputteri...