Welcome! Let’s grow the hydrogen economy together. Let’s grow the hydrogen community! Questions & Answers What can be optimized within a cathode to manage the water content ?

  • Jerryn Joy

    September 28, 2022 at 07:07

    Hi Bilal,

    It is an interesting question. I coud not find an exact answer to this question (since not my domain). But I found these research papers which discusses ways to manage water by changing material of catalyst layers, gas diffusion layers etc. to improve fuell cell performance.

    1) Optimization of cathode microporous layer materials for proton exchange membrane fuel cell

    2) A Review of Water Management in Polymer Electrolyte Membrane Fuel Cells

    3) Water management improvement in PEM fuel cells via addition of PDMS or APTES polymers to the catalyst layer

    • Bilal iskandarani

      September 28, 2022 at 07:26

      Thanks a lot.

      In fact, there are a lot that can be done in order to optimize the water management within the MEA. For me, I don’t think there is a single general answer for that. It is a case by case thing.
      But for instance, the hydrophilicity/hydrophobicity factor is one important parameter. Also , the pore size distribution with the catalyst layer and the GDL ( in fact, they need to compatible). There are a number of other factors that need to be considered to tackle such kind of issue.

      However, one needs to bear in mind, that water management doesn’t mean the expulsion of all water from the system nor flooding it. Water is a crucial component of the MEA. Its content need to be managed while not hurting the other processes that require water or are altered in the presence of excess water.

      Thanks again for your answer. I hope we can stay in contact for further discussions .

      • Jerryn Joy

        September 28, 2022 at 11:54

        Yes, I agree with your point.

        It depends on the application.

        Also, water is required for the efficient working of the fuel cell (hydration), for example to maintain good proton conductivity but at the same time, excess water (flooding) should be avoided. So a ‘balance’ is important. Thermal management is also done to prevent overheating and dehydration of the membrane.

        It will be a pleasure to have further discussions with you and learn something new .

  • Bilal iskandarani

    September 28, 2022 at 11:59

    Totally agree

    That what makes me love fuel cells. The various things you need to take into consideration in order to build an optimized system. It makes me feel proud.

    I have sent you a connection request over here. I would be glad if we can discuss further.

    Thanks for sharing

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