Details
| Originalsprache | Englisch |
|---|---|
| Seiten (von - bis) | F1271-F1277 |
| Fachzeitschrift | Journal of the Electrochemical Society |
| Jahrgang | 165 |
| Ausgabenummer | 16 |
| Publikationsstatus | Veröffentlicht - 21 Nov. 2018 |
Abstract
Polymer electrolyte membrane (PEM) water electrolysis is a key technology for sustainable hydrogen based energy supply. Gas permeation through the PEM leads to hydrogen in oxygen at the anode side posing a safety hazard and therefore restricting the operation window of PEM water electrolysis, especially when operating under pressure. In this work the hydrogen in oxygen content at the anode is significantly reduced when a recombination interlayer is integrated into the membrane electrode assemblies (MEAs) compared to reference MEAs without interlayer. The recombination interlayer with a platinum loading of 0.02 mg cm−2 is sprayed between two membranes that are coated with anode and cathode catalysts on the outside. The permeating H2 and O2 forms water at the recombination interlayer, leading to higher gas purity and resolving safety issues. In case of the MEAs with interlayer also a constant current hold at 1 A cm−2 for 245 h revealed only a slight increase of the hydrogen in oxygen content (below 140·10−6 vol.% h−1) whereas for the reference MEAs without interlayer a stronger increase was observed (above 1250·10−6 vol.% h−1). Furthermore, the long-term experiments showed no increased degradation rates compared to the reference MEAs.
ASJC Scopus Sachgebiete
- Werkstoffwissenschaften (insg.)
- Elektronische, optische und magnetische Materialien
- Energie (insg.)
- Erneuerbare Energien, Nachhaltigkeit und Umwelt
- Werkstoffwissenschaften (insg.)
- Oberflächen, Beschichtungen und Folien
- Chemie (insg.)
- Elektrochemie
- Werkstoffwissenschaften (insg.)
- Werkstoffchemie
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in: Journal of the Electrochemical Society, Jahrgang 165, Nr. 16, 21.11.2018, S. F1271-F1277.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Membrane interlayer with PT recombination particles for reduction of the anodic hydrogen content in PEM water electrolysis
AU - Klose, Carolin
AU - Trinke, Patrick
AU - Böhm, Timo
AU - Bensmann, Boris
AU - Vierrath, Severin
AU - Hanke-Rauschenbach, Richard
AU - Thiele, Simon
N1 - Funding information: The authors thank Chuyen Pham for helpful discussions throughout the project and providing material for pretests. Also, the authors would like to express very great appreciation to Ralf Thomann for imaging characterization. The authors gratefully acknowledge the financial support by the Federal Ministry of Education and Research of Germany in the framework of PowerMEE (project number 03SF0536).
PY - 2018/11/21
Y1 - 2018/11/21
N2 - Polymer electrolyte membrane (PEM) water electrolysis is a key technology for sustainable hydrogen based energy supply. Gas permeation through the PEM leads to hydrogen in oxygen at the anode side posing a safety hazard and therefore restricting the operation window of PEM water electrolysis, especially when operating under pressure. In this work the hydrogen in oxygen content at the anode is significantly reduced when a recombination interlayer is integrated into the membrane electrode assemblies (MEAs) compared to reference MEAs without interlayer. The recombination interlayer with a platinum loading of 0.02 mg cm−2 is sprayed between two membranes that are coated with anode and cathode catalysts on the outside. The permeating H2 and O2 forms water at the recombination interlayer, leading to higher gas purity and resolving safety issues. In case of the MEAs with interlayer also a constant current hold at 1 A cm−2 for 245 h revealed only a slight increase of the hydrogen in oxygen content (below 140·10−6 vol.% h−1) whereas for the reference MEAs without interlayer a stronger increase was observed (above 1250·10−6 vol.% h−1). Furthermore, the long-term experiments showed no increased degradation rates compared to the reference MEAs.
AB - Polymer electrolyte membrane (PEM) water electrolysis is a key technology for sustainable hydrogen based energy supply. Gas permeation through the PEM leads to hydrogen in oxygen at the anode side posing a safety hazard and therefore restricting the operation window of PEM water electrolysis, especially when operating under pressure. In this work the hydrogen in oxygen content at the anode is significantly reduced when a recombination interlayer is integrated into the membrane electrode assemblies (MEAs) compared to reference MEAs without interlayer. The recombination interlayer with a platinum loading of 0.02 mg cm−2 is sprayed between two membranes that are coated with anode and cathode catalysts on the outside. The permeating H2 and O2 forms water at the recombination interlayer, leading to higher gas purity and resolving safety issues. In case of the MEAs with interlayer also a constant current hold at 1 A cm−2 for 245 h revealed only a slight increase of the hydrogen in oxygen content (below 140·10−6 vol.% h−1) whereas for the reference MEAs without interlayer a stronger increase was observed (above 1250·10−6 vol.% h−1). Furthermore, the long-term experiments showed no increased degradation rates compared to the reference MEAs.
UR - http://www.scopus.com/inward/record.url?scp=85058007111&partnerID=8YFLogxK
U2 - 10.1149/2.1241814jes
DO - 10.1149/2.1241814jes
M3 - Article
AN - SCOPUS:85058007111
VL - 165
SP - F1271-F1277
JO - Journal of the Electrochemical Society
JF - Journal of the Electrochemical Society
SN - 0013-4651
IS - 16
ER -