Types of Micro Fuel Cells

Depending on the application, different scenarios can be considered for scahng down fuel-cell systems to millimeter size. 

In general, future micro fuel cell design should forego heavy bolts and thick BPs in order to miniaturize the system. The other components, such as the GDL and MEA, are negligible in volume and weight As a result, the material selection for the BPs becomes very important. Thin sheets that are stiff enough to achieve uniform low-contact resistance between MEA, flow field and current collector are needed. The bolts for the stack compression can be replaced by, for example, clamps, straps, or coiling techniques [9]. 

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