Self‐Humidifying Fuel Cell Membranes

This is a cactus‐inspired nano‐crack regulated fuel cell membranes that can regulate the water content in polymeric membrane. Nano‐cracks work as nanoscale valves to retard water desorption and to maintain ion conductivity in the membrane on dehumidification. Hydrocarbon membranes coated with this material are 5 times cheaper than commercial membrane for fuel cells. These membranes have excellent PEMFC performance at high temperature and low humidity and can have diverse application including in fuel cells and reverse electro dialysis (RED).

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