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. 11, 2012
Filed:
Dec. 12, 2007
Lung-yu Sung, Hsinchu County, TW;
Kan-lin Hsueh, Hsinchu County, TW;
Yi-yie Yan, Hsinchu, TW;
Shu-mei He, Hsinchu County, TW;
Shi-chern Yen, Taipei, TW;
Lung-Yu Sung, Hsinchu County, TW;
Kan-Lin Hsueh, Hsinchu County, TW;
Yi-Yie Yan, Hsinchu, TW;
Shu-Mei He, Hsinchu County, TW;
Shi-Chern Yen, Taipei, TW;
Industrial Technology Research Institute, Hsinchu, TW;
Abstract
A gas diffusion layer, a manufacturing apparatus and a manufacturing method thereof are provided. The gas diffusion layer having different hydrophilic/hydrophobic structure and channel therein can be manufactured quickly and easily by using a coating mask. The gas diffusion layer is used in various fuel cells to enhance the ability of water management and to solve the problem of flooding at the cathode, the problem of water deficit at the anode, and the problem of gas transfer. The gas diffusion layer includes a gas diffusion medium having a first property and a micro porous layer having a second property. The micro porous layer is formed on one surface of the gas diffusion medium. The micro porous layer has a plurality of channel layers penetrating the gas diffusion medium. One of the first property and the second property is hydrophilic, and the other is hydrophobic.