Dynamic model of oxygen starved proton exchange membrane fuel-cell using hybrid analytical-numerical method

摘要: Abstract One of the primary life-limiting factors in PEM fuel-cells arises from performance degradation resulting transfer (crossover) leaks. Transfer leaks result oxygen starvation and models fuel cells under starved conditions would allow for detection fault inception. This paper develops a unified fuel-cell model when can either deliver power (termed driving-mode, cell absorb driven-mode) higher leak rates. The captures gradient reactants both GDL flow channel addition to capturing various electro-chemical effects. response normal is first validated operation against previously published experiments. oxygen-starved then simulated three different architectures: Ballard 9-cell Mk1100 stack where hydrogen injected into one cell, 10-cell Mk902 20-cell Mk903 upstream cathode flow. Finally, also an actual leaky cell. generally agrees well with measured voltage data all above