TY  - JOUR
AU  - Panchenko, Olha
AU  - Borgardt, Elena
AU  - Zwaygardt, Walter
AU  - Hackemüller, Franz Josef
AU  - Bram, Martin
AU  - Kardjilov, Nikolay
AU  - Arlt, Tobias
AU  - Manke, Ingo
AU  - Müller, Martin
AU  - Stolten, Detlef
AU  - Lehnert, Werner
TI  - In-situ two-phase flow investigation of different porous transport layer for a polymer electrolyte membrane (PEM) electrolyzer with neutron spectroscopy
JO  - Journal of power sources
VL  - 390
SN  - 0378-7753
CY  - New York, NY [u.a.]
PB  - Elsevier
M1  - FZJ-2018-01318
SP  - 108-115
PY  - 2018
AB  - Electrolysis with polymer electrolyte membranes (PEMs) plays an increasingly important role in the development of inconsistent renewable energy technologies and seasonal storage. An effect that reduces the efficiency of PEM electrolysis is the mass transport limitation (MTL), which occurs at higher current densities and leads to a sudden increase in cell potentials. The oxygen generated on the anode side prevents the water from being supplied to the catalyst. Neutron-based imaging (neutron visualization techniques) make it possible to visualize mass transfer processes in the porous transport layer (PTL). When PTL materials are varied and operating modes used, it is possible to investigate the critical point at which the MTL is generated. This paper presents the results of neutron radiography measurements. In the course of the measurements, we have observed PEM electrolysis cells in operation, using different materials as anode PTL. The PTLs are metal plates made of sintered titanium particles, as well as titanium fiber. During the measurements, it was possible to visualize the water-gas distribution in the cell during operation in order to understand the mechanisms of mass transport.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000434748000014
DO  - DOI:10.1016/j.jpowsour.2018.04.044
UR  - https://juser.fz-juelich.de/record/843775
ER  -