公开(公告)号：EP2534282A4

公开(公告)日：2016-08-31

申请号：EP11742097

申请日：2011-01-18

申请人： PERMELEC ELECTRODE LTD

发明人： NARA MIWAKO ,  MIYAKAWA ERI ,  NISHIKI YOSHINORI

IPC分类号： C25B11/08 ,  C25B1/02

CPC分类号： C25B11/0494 ,  C25B11/0484 ,  Y02E60/366

摘要： The present invention aims to provide an activated cathode enabling a long-time stable operation with hydrogen overvoltage maintained at a low value, keeping a high remaining rate of the catalyst element after a cease of operation for a short-circuiting and after an electrolysis operation at a high current density, restricting catalyst loss to a little, and having a strong resistance to contamination caused by electrolyte impurity elements. The present invention relates to a cathode for hydrogen evolution with a catalyst layer formed on the cathode substrate, having, at least, three elements comprising platinum, cerium and palladium, as essential element, in a state of metal, metal oxide, or hydroxide, contained, where the mole fraction of respective element being x, y, and z, within a range of 5 mol %≦̸x≦̸90 mol %, 5 mol %≦̸y≦̸55 mol %, 5 mol %≦̸z≦̸65 mol %.