公开(公告)号：US09537168B2

公开(公告)日：2017-01-03

申请号：US14525804

申请日：2014-10-28

申请人： BASF SE

发明人： Zhenyu Liu ,  Yu-Min Tsou ,  Emory De Castro

IPC分类号： H01M8/10 ,  H01M4/86 ,  H01M4/90 ,  H01M8/02 ,  H01M4/92

CPC分类号： H01M8/1004 ,  H01M4/8605 ,  H01M4/861 ,  H01M4/8657 ,  H01M4/9083 ,  H01M4/926 ,  H01M8/0234 ,  H01M8/0236 ,  H01M8/0239 ,  H01M8/0243 ,  H01M8/0245 ,  H01M8/103 ,  H01M8/1048 ,  H01M8/1067 ,  H01M2008/1095 ,  Y02E60/521

摘要： The present invention relates to improved membrane electrode assemblies, having two electrochemically active electrodes separated by a polymer electrolyte membrane.The membrane electrode assemblies according to the instant invention contains at least one phosphoric acid-containing polymer electrolyte membrane and two gas diffusion electrodes one of each located at both sides of said membrane, each of the gas diffusion electrodes having at least one catalyst layer facing towards the membrane. At least one of the gas diffusion electrodes contains a gas diffusion medium comprising an electrically conductive macroporous layer in which the pores have a mean pore diameter in the range from 10 μm to 30 μm and at least one micro porous layer arranged between said gas diffusion medium and said catalyst layer facing towards the membrane having a defined pore void volume and pore hydrophobicity measured by the Cobb Titration.

摘要翻译： 根据本发明的膜电极组件包含至少一个含磷酸的聚合物电解质膜和两个位于所述膜两侧的气体扩散电极，每个气体扩散电极具有至少一个催化剂层， 膜。 气体扩散电极中的至少一个包含气体扩散介质，该气体扩散介质包括导电性大孔层，其中孔的平均孔径在10μm至30μm的范围内，并且至少一个微孔层布置在所述气体扩散介质之间 并且所述催化剂层面向膜，其具有限定的孔隙体积和通过Cobb滴定测量的孔疏水性。