On the Effect of Clamping Pressure and Methods on the Current Distribution of a Proton Exchange Membrane Water Electrolyzer

Saher Al Shakhshir, Fan Zhou, Søren Knudsen Kær

Publikation: Konferencebidrag uden forlag/tidsskriftPosterForskning

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Abstrakt

The degradation of the electrochemical reaction of the proton exchange membrane water electrolysis (PEMWE) can be characterized using in-situ current mapping measurements (CMM). CMM is significantly affected by the amount of clamping pressure and method. In this work the current is mapped downstream at the cathode side of 50 cm2 active area single PEMWE cell at different clamping pressure and different clamping methods. Two clamping methods are used; bolting the cell with 8 bolts around the active area and clamping the cell from the whole area of the end plate using highly pressurized clamping set-up. CMM is carried out using S++ setup, where the segmented plate is placed between the current distributor and flow field plate downstream at the cathode side of the PEMWE cell. The segmented plate consists of 100 segments over the 50 cm2, thus each segment area is 0.5 cm2.

Initial results show that, the clamping pressure effect on the CMM is not symmetrical in both clamping method and it directly affects the CMM homogeneity. Also it is concluded that higher PEMWE cell performance not necessary means more homogeneous CMM over the cell area.
OriginalsprogEngelsk
Publikationsdatomaj 2018
Antal sider1
StatusUdgivet - maj 2018
Begivenhed233rd ECS Meeting - Seattle, USA
Varighed: 13 maj 201817 maj 2018

Konference

Konference233rd ECS Meeting
LandUSA
BySeattle
Periode13/05/201817/05/2018

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