TY  - CONF
AU  - Daudt, Natalia
AU  - Hackemüller, Franz Josef
AU  - Bram, Martin
TI  - Porous Transport Layers Made of Niobium/Steel Composites for Water Electrolysis
M1  - FZJ-2020-03924
PY  - 2020
AB  - In future energy concepts, water splitting by polymer electrolyte membrane (PEM) electrolysis is a key technology for converting regenerative energy from wind or sun into hydrogen. In this study, a novel porous transport layer for PEM electrolysis units was developed, which is based on a stainless steel substrate coated with a porous Nb layer. Nb layer is expected to improve the electrochemical performance and lifetime of electrolysis cells due to formation of a stable passivation layer with good electrical conductivity. Scalable powder metallurgical techniques like tape casting, screen printing and field assisted sintering/spark plasma sintering FAST/SPS were used for manufacturing this composite structure. The porous transport layer was characterized with respect to microstructure. FAST/SPS was found to be promising to decrease interdiffusion at the interface. Finally, first electrochemical tests were conducted on laboratory scale demonstrating the potential of the composite to replace state-of-the-art titanium-based transport layers.
T2  - EURO PM 2020
CY  - 5 Oct 2020 - 7 Oct 2020, online (Portugal)
Y2  - 5 Oct 2020 - 7 Oct 2020
M2  - online, Portugal
LB  - PUB:(DE-HGF)6
UR  - https://juser.fz-juelich.de/record/885553
ER  -