Table 3 Sources in literature for experimental data correlating CCL proton conductivity with ionomer content.
From: Structure and conductivity of ionomer in PEM fuel cell catalyst layers: a model-based analysis
Reference | Method to measure \(\sigma _{CCL}\) | Reference value for \(\sigma _{bulk}\) | Ionomer content information | Relative humidity RH | Temperature T | Ionomer used |
|---|---|---|---|---|---|---|
Liu et al.52 | EIS | Provided as g | As \(x_{ion}\) | \(35\%, 50\%,\) \(75\%, 122\%\) | 80 °C | Nafion 1050 EW, Nafion 850 EW |
Yakovlev et al.12 | EIS | 120 mS cm−1, estimated | As I:C | \(100\%\) | 60 °C | Nafion 1100 EW |
Boyer et al.44 | DC | 100 mS cm−1, provided | As \(x_{ion}\) | \(100\%\) | 50 °C | Nafion 960 EW |
Suzuki et al.86 | EIS | 89 mS cm−1, estimated | As \(x_{ion}\) | \(100\%\) | Room temperature | Nafion, no EW reported |
Du et al.87 | DC | 300 mS cm−1, provided | As \(x_{ion}\) | \(100\%\) | 80 °C | Nafion, no EW reported |
Modestov et al.79 | EIS | 7 mS cm−1, provided | As I:C | \(100\%\) | Room temperature, 22–25 °C | Nafion, no EW reported |
Havránek and Wipperman88 | EIS | 120 mS cm−1, provided | As \(x_{ion}\) | Flooded | 40 °C | Nafion, no EW reported |
