Electrolysers; electrolytic cells; electrodes, membranes and cell stacks for electrolysers; fuel cell electrodes having electrocatalytic properties; catalyst-coated electrodes forming a single homogeneous part; electrodes and membranes forming a single homogeneous part; electrochemical measuring instruments and apparatus; electrochemical cells; fuel cells; hydrogen fuel cells; fuel cell electrodes; fuel cell membranes; fuel cell stacks; ion beam generators; sputtering apparatus; sputtering in...