Table 3.
Water uptake and electrochemical properties of PAEK-type PEMs.
| PAEK-Type | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Membrane | Year | %DS | Modifications | Fuel Cell Type | Filler Content | IEC (meq/g) | Water Uptake (%) | Proton Conductivity (S/cm) | Peak Power Density (mW/cm2) |
| SPEEK/n-BuOH [37] | 2015 | - | n-BuOH self-organization inducer | PEMFC | - | 1.5 (mmol/g) | ~52 (80°C) | 0.314 (80°C) | - |
| b-CPAEK [38] |
2016 | - | PAEK block copolymers | DMFC | - | 1.92 | ~50 (90°C) | ~0.11 (90°C, 95%RH) |
- |
| SPEEK/AIT [39] | 2016 | 68 | Amine-functionalized iron titanate (AIT) | PEMFC | 2wt% AIT | - | 72 (25°C) | 0.12 (80°C) | 204 (80°C, 90%RH, H2/O2) |
| Pore filling SPAEK [40] | 2017 | 80 | SPAEK-filled porous PAEK | DMFC | - | 1.47 | ~55 (90°C) | ~0.11 (90°C, 90% RH) | - |
| SPEEK-SrGO [41] | 2017 | - | Sulfonated reduced graphene oxide | PEMFC | 1wt% SrGO | 1.69 | 31.1 (80°C) | 0.0086 (80°C 50%RH) | 705 (70°C,80%RH, H2/Air) |
| BrPAEK-MeIm [35] |
2018 | - | Nitrogen-heterocycles | HTPEMFC | 1.6 imidazole/unit | 1.95 | - | 0.091 (170°C, 0% RH) | - |
| MeIm-PAEK/PVDF-HFP [36] | 2018 | - | MeIm-PAEK/PVDF-HFP blend | HTPEMFC | 10% PVDF-HFP | - | 103 (60°C) | 0.219 (180°C, 0%RH) | - |
| SPEEK/Bu/SPEEK/Im [42] | 2018 | 47 | SPEEK/PU/SPEEK/bmim layer-by-layer | HTPEMFC | - | - | - | 0.103 (160°C, 0%RH) | - |
| GO-g-SPEEK/Nafion-33 [30] | 2018 | 80 | GO, Nafion-33 blended | PEMFC | - | 1.45 | 136.3 (90°C) | ~0.23 (90°C) | 213 (60°C, 50% RH, H2/Air) |
| XSPEEK/CNC [31] |
2019 | 70 | EG + CNC | PEMFC | 67:33 (SPEEK:EG) 4wt% CNC | 1.72 | 78.2 (95°C) | 0.186 (95°C,95%RH) | - |
| SPEEK/PDA@PVDF [32] | 2019 | 76.7 | SPEEK embedded PDA-containing PVDF nanofibers | DMFC | 85.7 wt% PDA@PVDF | - | ~60 (80°C) | 0.06 (80°C, 100%RH) | 104 (5 M MeOH/O2, 70°C) |
| SSi-GO/SPEEK [33] |
2019 | - | SPEEK nanofibers/SSi-GO | DMFC | 2.5wt% | 1.65 (mmol/g) | ~90 (70°C) | 0.1566 (70°C,100% RH) | - |
| PAEK-b-KSPAEK/OSPN [34] | 2019 | - | PAEK-b-KSPAEK copolymer/OSPN | PEMFC | 24wt% OSPN | - | 84.01 (90°C) | ~0.11 (90°C, 100%RH) | 410 (80°C, 100%RH, H 2/O2) |