Factors in electrode fabrication for performance enhancement of anion exchange membrane water electrolysis
- Factors in electrode fabrication for performance enhancement of anion exchange membrane water electrolysis
- 김형준; 장종현; 헨켄스마이어디억; 유성종; 김진영; 박현서; 이소영; 박희영; 조민경; 최승회; 성영은
- Anion exchange membrane water; electrolysis; Membrane electrode assembly; Polytetrafluoroethylene; Hot-pressing; Binder content
- Issue Date
- Journal of power sources
- VOL 347-290
- To improve the cell performance for alkaline anion exchange membrane water electrolysis (AEMWE), the effects of the amount of polytetrafluoroethylene (FIFE) non-ionomeric binder in the anode and the hot pressing conditions during the fabrication of the membrane electrode assemblies (MEAs) on cell performances are studied. The electrochemical impedance data indicates that hot-pressing at 50 degrees C for 1 min during MEA construction can reduce the polarization resistance of AEMWE by similar to 12%, and increase the initial water electrolysis current density at 1.8 V (from 195 to 243 mA cm(-2)). The electrochemical polarization and impedance results also suggest that the AEMWE performance is significantly affected by the content of PTFE binder in the anode electrode, and the optimal content is found to be 9 wt% between 5 and 20 wt%. The AEMWE device fabricated with the optimized parameters exhibits good water splitting performance (299 mA cm(-2) at 1.8 V) without noticeable degradation in voltage cycling operations.
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