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Factors in electrode fabrication for performance enhancement of anion exchange membrane water electrolysis

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Title
Factors in electrode fabrication for performance enhancement of anion exchange membrane water electrolysis
Author(s)
Min Kyung Cho; Hee-Young Park; Seunghoe Choe; Sung Jong Yoo; Jin Young Kim; Hyoung-Juhn Kim; Dirk Henkensmeier; So Young Lee; Yung-Eun Sung; Hyun S. Park; Jong Hyun Jang
Subject
Anion exchange membrane water, ; electrolysis, ; Membrane electrode assembly, ; Polytetrafluoroethylene, ; Hot-pressing, ; Binder content
Publication Date
2017-04
Journal
JOURNAL OF POWER SOURCES, v.347, pp.283 - 290
Publisher
ELSEVIER SCIENCE BV
Abstract
To improve the cell performance for alkaline anion exchange membrane water electrolysis (AEMWE), the effects of the amount of polytetrafluoroethylene (PTFE) 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 °C for 1 min during MEA construction can reduce the polarization resistance of AEMWE by ∼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. © 2017 Published by Elsevier B.V.
URI
https://pr.ibs.re.kr/handle/8788114/3724
DOI
10.1016/j.jpowsour.2017.02.058
ISSN
0378-7753
Appears in Collections:
Center for Nanoparticle Research(나노입자 연구단) > 1. Journal Papers (저널논문)
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