ABSTRACT
Some other researchers studied the transient process of PEM fuel cells through mathematical methods. Najjari 2013 put forward a one-dimensional transient model to study the effect of gravity on liquid water transport in the GDL. They pointed out that the response time of fuel cell decreases in consideration of gravity. Verma 2014 carried out numerical study on the influence of membrane properties on the transient behavior of PEM fuel cells. They found that the voltage response is sensitive to the membrane properties and water diffusion in porous media.
