Multiscale modeling of degradation of full solid oxide fuel cell stacks

Limiting the degradation of solid oxide fuel cells is an important challenge for their widespread use and commercialization. The computational expense long-term simulation a full stack with conventional models immense. In this study, we present multiscale three-dimensional model degrading cells, where integrate phenomena nickel particle coarsening in anode electrode, chromium poisoning cathode oxidation interconnect into stack. This approach makes type computationally feasible, 38 thousand hours operation can be simulated 1 h 15 min on high-end workstation. Hereby one start to explore optimum operating conditions range parameters. validated experimental data from 18-cell Jülich Mark-F experiment predicts common trends reported literature evolutions performance, phenomena, related variables. Moreover, it captures how different regimes degrades at rates various interact over time. used investigate effects galvanostatic potentiostatic modes, conditions, flow configurations performance Results demonstrate, as expected, that mode, moderate temperature, lower load current, counter-flow configuration improve