Patent ID: 7520921
Filing Date: 2009-04-21
Classification: B01D,B01J,H01M,Y02E,Y02T

Abstract:
1. An air supply system for supplying air to a fuel cell, wherein the fuel cell generates electric energy by an electrochemical reaction between a fuel gas and oxygen contained in the air, the air supply system comprising: an air cleaner disposed on an upstream side of the fuel cell and having housing; a filter element disposed within the housing of the air cleaner and arranged and constructed to remove dust particles from the air; and a gas-removing device disposed within the housing of the air cleaner on the downstream side of the filter element and arranged and constructed to remove impurity gases from the air; wherein the gas-removing device comprises: activated carbon fibers having micropores formed therein in order to absorb impurity gas particles contained in the air, the micropores having inner walls; and an alternate adsorption membrane formed on the inner walls of the micropores of each of the activated carbon fibers in order to further adsorb at least one type of impurity gas particles from among the impurity gas particles absorbed by the porous material, the alternate adsorption membrane comprising at least one positively charged layer and at least one negatively charged layer alternately laid together.