Study on the performance of proton exchange membrane fuel cell (PEMFC) with dead-ended anode in gravity environment

A breakthrough hydrogen and oxygen utilization in a H2-O2 PEMFC stack with dead-ended anode and cathode

“…The difference in the volume of the collected water is due to various pressure differences caused by gas purging. The uniformity of the local current density can be improved and part of the generated water can continuously be removed with the help of gravity using vertical placements [25]. With the advantages of gas purging and the use of vertical placements, almost all of the generated water can be completely collected in the two buffer tanks.…”

“…To utilize the excess fuel, recirculation devices or methods [21][22][23] are required to re-circulate the unused gas back into the system to improve fuel efficiency. For this reason, the implementation of the dead-ended mode is required and can be achieved with a dead-ended anode (DEA) [24][25][26][27][28], dead-ended cathode(DEC) [29], and dead-ended anode and cathode(DEAC) [30][31][32], each of which is required in different situations. The DEA mode is designed to increase the consumption rate of hydrogen, resulting in an improvement in efficiency.…”

Real-Time Monitoring of the Temperature, Flow, and Pressure Inside High-Temperature Proton Exchange Membrane Fuel Cells

“…Askaripour et al [ 9 ] developed a single PEMFC model capable of predicting the distribution of parameters (temperature, humidity, pressure, cell current density) along the anode and cathode flow channels and analyzing the relationship of parameters to cell performance. Liu [ 10 ] et al studied the effect of flow channel placement direction on the performance of PEMFCs with dead-end anodes (DEAs) under a gravity environment, and found that different flow channel placement directions also had a significant impact on the local current density distribution of PEMFCs and DEAs. Yang et al [ 11 ] used platinum as the thermistor deposited on the membrane surface and calculated the surface temperature with the help of resistance temperature calibration data.…”

Effect of inner dehumidification technique on the performance of a dead‐ended proton exchange membrane fuel cell stack

“…Meanwhile, the droplet gravity must also be greater than the viscous force between the wall surface of the flow plate channel and diffusion layer. The gravity‐aided water drainage mode is easy to operate, but the water removal is greatly affected by gravitational acceleration, channel direction, and material surface characteristics 24,25 . Gravity‐aided drainage is generally insufficient to completely drain the water from the fuel cell channel, which can easily cause local water flooding and fuel deficiency, especially at high current densities.…”