Humidification Control Device
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United States of America Patent
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Issued Date -
Apr 9, 2015
app pub date -
Oct 7, 2013
filing date -
Oct 7, 2013
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Abstract
A humidification control device and an apparatus implementing the humidification control device is provided. The device includes a membrane electrode assembly (MEA) for the control of humidity in an enclosed space via electrolysis. The MEA includes an anode, a cathode and a proton exchange membrane (PEM) disposed between the anode and the cathode. The PEM is selected to increase the efficiency of the humidification control device by decreasing the back diffusion of water across the PEM. The PEM may include a functional tetrafluoroethylene (TFE) copolymer having a polymer chain of TFE and at least one comonomer having a proton conducting functional group pendant to said polymer chain. The comonomer may be present in an amount from about 0.01 mol. % to about 7 mol. % of the TFE copolymer. In one embodiment, the comonomer is a fluorovinyl ether such as perfluorosulfonyl vinyl ether (PSVE).
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