Patent ID: 7097930
Filing Date: 2006-08-29
Classification: H01M,Y02E

Abstract:
1. An apparatus for carbon dioxide separation in a direct methanol fuel cell system, comprising: (a) a membrane permeable to carbon dioxide; (b) a first plate and a second plate sandwiched together and enclosing said membrane, wherein said first plate and said second plate are stacked with a direct methanol fuel cell stack; (c) wherein said first plate and said second plate each having a flow field at the site facing and in contact with said membrane, wherein said membrane is a barrier between said flow fields; (d) wherein said flow field of said first plate has a first hole at one end and a second hole at another end, said first hole providing access for the anode output stream of said direct methanol fuel cell system, said anode output stream comprises at least carbon dioxide, unused methanol and unused water, said second hole providing output for said anode output stream substantially comprising said unused methanol and said unused water; and (e) wherein said flow field of said second plate has an exit hole to vent said carbon dioxide that permeated through said membrane.