The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 20, 2016
Filed:
Aug. 18, 2009
BO Ki Hong, Seoul, KR;
Kook IL Han, Seoul, KR;
Sang Yeoul Ahn, Seoul, KR;
Keun Je Lee, Gyeonggi-do, KR;
Byeong Heon Jeong, Gyeonggi-do, KR;
Bo Ki Hong, Seoul, KR;
Kook Il Han, Seoul, KR;
Sang Yeoul Ahn, Seoul, KR;
Keun Je Lee, Gyeonggi-do, KR;
Byeong Heon Jeong, Gyeonggi-do, KR;
Hyundai Motor Company, Seoul, KR;
Kia Motors Corporation, Seoul, KR;
Abstract
The present invention provides a gas diffusion layer for a fuel cell vehicle with improved operational stability, the gas diffusion layer, which functions to supply hydrogen and air (oxygen) as reactant gases to a fuel cell stack, discharge product water generated by an electrochemical reaction, and transmit generated electricity, being formed with a thinned structure. For this purpose, the present invention provides a gas diffusion layer for a fuel cell vehicle with improved operational stability, the gas diffusion layer being formed with a dual layer structure including a microporous layer and a macroporous substrate, the macroporous substrate being formed of a material selected from the group consisting of carbon fiber felt and carbon fiber paper, the gas diffusion layer being thinned to have a thickness of 200 to 300 μm at 25 kPa and a thickness of 170 to 250 μm at 1 MPa, a density of 0.20 to 0.60 g/cmat 25 kPa, a porosity of 50 to 90% measured by mercury intrusion, and a through-plane electrical resistance of 30 mΩ·cmor lower measured at a clamping pressure of 1 MPa.