탄화수소계 전해질막 기반 막-전극접합체 제조를 위한 전사 기술
Decal Transfer Method of Hydrocarbon Membranes for Fabricating a Membrane Electrode Assembly (MEA)
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초록
This study investigated the effects of the proton-exchanging conditions of the sulfonated poly (ether ether ketone)(sPEEK) membranes on the decal transfer rate. Various pre-treatment conditions of proton-exchanging the sPEEK membranes wereused in terms of the acid concentration, temperature and time. The sPEEK membranes were analyzed to examine the effects of the acidconcentration, temperature, and immersion time. The proton conductivities of the membranes were evaluated. The membrane electrodeassembly, (MEA) of sPEEK membranes were fabricated by the decal transfer method. As a result, the pre-treated sPEEK membranesshowed the highest proton conductivity (0.044 S cm-1, 0.16 meq g-1) immersed in 0.5 M H2SO4 for 2h, and it brought about the highestcell performance (0.39 A cm-2@ 0.6 V, 0.269 W cm-2) due to a decrease in Ohmic resistance. Among the conditions for pre-treatment,the concentration of the pre-treatment acid solutions was found to be the most significant factor determining the proton conductivity ofthe membranes.
Abstract
This study investigated the effects of the proton-exchanging conditions of the sulfonated poly (ether ether ketone)(sPEEK) membranes on the decal transfer rate. Various pre-treatment conditions of proton-exchanging the sPEEK membranes wereused in terms of the acid concentration, temperature and time. The sPEEK membranes were analyzed to examine the effects of the acidconcentration, temperature, and immersion time. The proton conductivities of the membranes were evaluated. The membrane electrodeassembly, (MEA) of sPEEK membranes were fabricated by the decal transfer method. As a result, the pre-treated sPEEK membranesshowed the highest proton conductivity (0.044 S cm-1, 0.16 meq g-1) immersed in 0.5 M H2SO4 for 2h, and it brought about the highestcell performance (0.39 A cm-2@ 0.6 V, 0.269 W cm-2) due to a decrease in Ohmic resistance. Among the conditions for pre-treatment,the concentration of the pre-treatment acid solutions was found to be the most significant factor determining the proton conductivity ofthe membranes.
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