Table 4.

The proton conductivities of ZIF-series MOF modified membranes.

Hybrid membranes	Additive	Conductivity (S cm−1)	Conditions	References
PBI@ZIF-8	H3PO4	3.1 × 10−3	180oC, anhydrous	Escorihuela et al., 2018
PBI@ZIF-67	H3PO4	4.2 × 10−2	180oC, anhydrous	Escorihuela et al., 2018
PBI@ZIF-Mix	H3PO4	9.2 × 10−2	180oC, anhydrous	Escorihuela et al., 2018
SPEEK@ZIF-8	–	1.6 × 10−2	100oC	Barjola et al., 2018
SPEEK@ZIF-67	–	1.5 × 10−2	100oC	Barjola et al., 2018
SPEEK@ZIF-Mix	–	2.9 × 10−2	100oC	Barjola et al., 2018
PEI@ZIF-8	TBA	1.9 × 10−3	75oC, 95%RH	Vega et al., 2017
PEI@ZIF-67	TBA	1.8 × 10−3	75oC, 95%RH	Vega et al., 2017
PEI@ZIF-Mix	TBA	3.0 × 10−3	75oC, 95%RH	Vega et al., 2017
SPEEK@ZCN	CNTs	5.0 × 10−2	120oC, 30%RH	Sun et al., 2017b