公开(公告)号：US20150111127A1

公开(公告)日：2015-04-23

申请号：US14581473

申请日：2014-12-23

Applicant: HYUNDAI MOTOR COMPANY ,  KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Bo Ki Hong ,  Sae Hoon Kim ,  Kook Il Han ,  Kwang Ryeol Lee ,  Myoung Woon Moon

IPC: H01M8/10

CPC classification number: H01M8/1007 ,  H01M4/8605 ,  H01M4/8807 ,  H01M4/8817 ,  H01M4/8821 ,  H01M4/886 ,  H01M8/1004 ,  H01M2008/1095 ,  H01M2300/0082 ,  Y02E60/521 ,  Y10S977/778 ,  Y10S977/89

Abstract: Disclosed is a fuel cell with enhanced mass transfer characteristics in which a highly hydrophobic porous medium, which is prepared by forming a micro-nano dual structure in which nanometer-scale protrusions with a high aspect ratio are formed on the surface of a porous medium with a micrometer-scale roughness by plasma etching and then by depositing a hydrophobic thin film thereon, is used as a gas diffusion layer, thereby increasing hydrophobicity due to the micro-nano dual structure and the hydrophobic thin film. When this highly hydrophobic porous medium is used as a gas diffusion layer for a fuel cell, it is possible to reduce water flooding by efficiently discharging water produced by an electrochemical reaction of the fuel cell and to improve the performance of the fuel cell by facilitating the supply of reactant gases such as hydrogen and air (oxygen) to a membrane-electrode assembly (MEA).

Abstract translation: 公开了具有增强的传质特性的燃料电池，其中通过形成微纳米双重结构制备的高度疏水的多孔介质，其中在多孔介质的表面上形成具有高纵横比的纳米级突起， 通过等离子体蚀刻，然后在其上沉积疏水性薄膜的微米级粗糙度被用作气体扩散层，从而由于微纳米双结构和疏水性薄膜而增加疏水性。 当这种高度疏水性的多孔介质用作燃料电池的气体扩散层时，可以通过有效地排放由燃料电池的电化学反应产生的水来减少水驱，并且通过促进燃料电池的性能来提高燃料电池的性能 向膜 - 电极组件（MEA）供应诸如氢气和空气（氧气）的反应气体。