. 2019 Jul 11;9(7):83. doi: 10.3390/membranes9070083

Table 4.

Comparison of proton conductivities of sulfonated PEEK-based composite membranes and their PEMFC performance.

Membrane	Water Uptake	Conductivity/Temp/%RH/ Activation Energy	Maximum Power Density in PEMFC	Ref.
SPEEK/9.6 wt.% WC-SiW	6.95 ± 0.08@30 °C	50 mS/cm at 95 °C and 85% RH	Not reported	[155]
SPEEK/9.6 wt.% WC-SiW	6.95 ± 0.08@30 °C	11.2 kJ/mol	Not reported	[155]
SPEEK/2.5 wt.% ZCN	19.4%@30 °C	50.24 mS/cm at 100 °C and 100% RH	Not reported	[59]
SPEEK/2.5 wt.% ZCN	19.4%@30 °C	15.93 kJ/mol	Not reported	[59]
SPEEK/10 wt.% Analcime	31%@25 °C	401.6 mS/cm at 90 °C and 100% RH	Not reported	[153]
SPEEK/10 wt.% Analcime	31%@25 °C	15.1 kJ/mol	Not reported	[153]
SPEEK/10 wt.% S-UiO-66@GO	30 wt.%@100 °C	268 mS/cm at 70 °C and 95% RH	Not reported	[62]
SPEEK/10 wt.% S-UiO-66@GO	30 wt.%@100 °C	9 kJ/mol	Not reported	[62]
SPEEK/2.5 wt.% ZrO₂	20 wt.%@25 °C	40 mS/cm at 90 °C and 100% RH	Not reported	[156]
SPEEK/40 wt% polysilsesquioxane		142 mS/cm at 120 °C and 100% RH	Not reported	[157]
SPEEK/7.5 wt.% sul-MIL101	30%@25 °C	306 mS/cm at 75 °C and 100% RH	Not reported	[58]
SPEEK/1 wt% Fe₂TiO₅	61%@25 °C	96 mS/cm at 80 °C and 90% RH	80 °C and RH = 90% 188 mW/cm²	[152]
SPEEK/1 wt% Fe₂TiO₅	61%@25 °C	10.8 kJ/mol	80 °C and RH = 90% 188 mW/cm²	[152]
SPEEK/5 wt.% s-GO	60%@30 °C	55 mS/cm at 80 °C and 30% RH	80 °C and RH = 30% 378 mW/cm²	[64]
SPEEK/5 wt.% s-GO	60%@30 °C	22.21 kJ/mol	80 °C and RH = 30% 378 mW/cm²	[64]
SPEEK/SFMC/5 wt.% GO	49.15@90 °C	111.9 mS/cm at 90 °C and 100% RH	70 °C and RH = 100%	[158]
SPEEK/SFMC/5 wt.% GO	49.15@90 °C	21.31 kJ/mol	528.01 mW/cm²	[158]
SPEEK/9 wt.% HPW@MIL101	29%@25 °C	272 mS/cm at 65 °C and 100% RH	60 °C and RH = 100%	[63]
SPEEK/9 wt.% HPW@MIL101	29%@25 °C	6.51 mS/cm at 60 °C and 40% RH	383 mW/cm²	[63]