I am trying to design a cell for an in-situ experiment. As much as possible, I was hoping to be able to do it on a PEM MEA rather than on a half cell immersed on an electrolyte. I am thinking that water will likely interfere with the measurement during transmission mode so I am trying to think of ways to work around it.

However, I was looking at other works reported in literature and it seems that water interfering with the measurement is not being mentioned and they are more concerned with the bubbles. So this got me to wonder, is the effect of water really that significant after all? Or can I minimize it by simply "thinning" out the part of the chamber of the cell containing water which the X-ray will pass through?


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