公开(公告)号：EP2561571B1

公开(公告)日：2014-02-26

申请号：EP11715251.2

申请日：2011-04-20

申请人： Commissariat à l'Énergie Atomique et aux Énergies Alternatives ,  Hexcel Reinforcements

发明人： MORIN, Arnaud ,  BERAUD, Jean-Marc ,  JONQUILLE, Jenny ,  PAUCHET, Joël ,  SENECOT, Jean-Marc

IPC分类号： H01M8/02 ,  C25B9/10

CPC分类号： C25B9/10 ,  H01M8/0234 ,  H01M2008/1095 ,  Y02E60/50 ,  Y10T29/49108

公开(公告)号：EP2561571A1

公开(公告)日：2013-02-27

申请号：EP11715251.2

申请日：2011-04-20

申请人： Commissariat à l'Énergie Atomique et aux Énergies Alternatives ,  Hexcel Reinforcements

发明人： MORIN, Arnaud ,  BERAUD, Jean-Marc ,  JONQUILLE, Jenny ,  PAUCHET, Joël ,  SENECOT, Jean-Marc

IPC分类号： H01M4/96 ,  H01M4/86 ,  H01M8/02 ,  H01M4/88 ,  C25B11/12 ,  C25B1/02 ,  H01M8/08

CPC分类号： C25B9/10 ,  H01M8/0234 ,  H01M2008/1095 ,  Y02E60/50 ,  Y10T29/49108

摘要： Method for producing a diffusion layer for an electrochemical device, comprising the following steps: superposing a plurality of unidirectional webs (102a, 102b, 102c) of carbon filaments, the filaments of each web being deposited in parallel next to one another; needle punching the webs, piercing some of the filaments such that pierced portions of said filaments are entangled with other carbon filaments of the webs; cutting out part of the plurality of unidirectional webs, the carbon filaments forming an electrically conductive external surface of the diffusion layer, and in which method the needle-punching step punches right through the thickness of the plurality of webs, and/or through two opposed main faces (116, 118) of the plurality of webs, and/or with a density of impacts with the plurality of webs of between about 100 and 300 impacts/cm
2 .