Impact on the PEM fuel cell performance on many factors such as temperature,pressure,fuel and oxidant gas flow, and other external factors, but also internal factors such as heat and mass transport. One of the most important factor is the impact of internal water management. The quality of water management will directly affect theirPA3534U-1BRS ， PA3591U-1BRS ， PA3465U-1BRS performance, good or bad, and the water in the PEM fuel cell is in a double-edged sword that can not be short of water, membrane, gas diffusion layer of the water can not be locked, but also consider the excess moisture discharge and so on.
Many people in the PEM fuel cell water management research, most of the transfer in the form of simulation models of companies. Hua Meng has given a three-dimensional model to simulate the MEA (membrane electrode assembly) in the continuous water down the process. B. Carnes et all the use of one-dimensional and two-dimensional model of the PEM fuel cell in the proton and water were analyzed. Wei-Mon Yan et al with the one-dimensional model by coupling the temperature gradient and mass transfer detailed analysis of the PEM fuel cell membrane thermal management of the water.
Van Trung Nguyen et al from the gas transmission and distribution analysis of PEM fuel cell stack in the water. N. Rajalaks experiments were conducted to the battery leads to dry gas measurement flow channel of water and change shape to produce analysis of water transport. Baschuk JJ et , using mathematical models to simulate the battery’s charge level of impact on the performance of flooding. The existing two-dimensional and three-dimensional mathematical model of the performance of PEM fuel cells, internal water supply and distribution of the simulation analysis. No law as the fundamental gravity,there is only mentioned in the model, there is no way to verify, with experimental effects of gravity on the water.
This article is a PEM fuel cell cathode and anode humidification of different circumstances, the examination of gravity on the PEM fuel cell cathode liquid water,PA3285U-1BRS ， PA3285U-2BRS ， PA3285U-3BRS the impact of the transfer, so that the performance of PEM fuel cell designed experimental program, with upward and downward at the cathode and anode is placed in the changing situation, highlight the severity of PEM fuel cell current density effects.