Table 9.
The characteristics and electrochemical performance of grafting modified separators by inorganic modification materials
| Separator | Coating thickness (μm) | Porositya (%) | Coating mass fraction (%) | Contact angle | Electrolyte uptake | Ionic conductivity (mS cm–1) at RT | Cyclic performance | References |
|---|---|---|---|---|---|---|---|---|
| PE/TiO2 | –b | – | – | 89° (H2O) | – | 0.50 | > 90% after 100 cycles at 0.2C | [209] |
| PE/SiO2 | – | – | – | 79° (H2O) | – | 0.45 | > 90% after 100 cycles at 0.2C | [210] |
| PP/FeOOH | – | – | – | 19.7° (electrolyte) | – | – | 80.5% after 500 cycles at 5C | [211] |
| PP/AA | – | – | – | 75° (H2O) | 280% | – | 78% after 50 cycles at 0.2C (original) > 90% after 50 cycles at 0.2C (modified) | [212] |
| PP/CFP | – | – | – | 26.5°(electrolyte) | – | 0.99 | 53% after 800 cycles at 1C (original) 87.6% after 800 cycles at 1C (modified) | [213] |
| PP/PAM + SiO2 | 3 | 45 | – | 37° (H2O) | 436% | 1.43 | – | [214] |
| PP/PE/PP/SiO2 + TEOS | 0.6 | – | 28 | – | – | 0.16 | 91% after 65 cycles at 0.2C (original) 96% after 65 cycles at 0.2C (modified) | [215] |
| PP-S/PPS + CTS | 0.73 | – | – | 7.4° (electrolyte) | – | 1.01 | 52% after 300 cycles at 0.5C (original) 94.5% after 300 cycles at 0.5C (modified) | [216] |
| PE/PEI + SiO2 | – | 47.6 | – | 24.6° (H2O) | 398% | 0.49 | 79% after 100 cycles at 0.5C (original) 90.1% after 100 cycles at 0.5C (modified) | [217] |
| PE/PAA + ZrO2 | – | – | – | 39° (H2O) | 325% | 0.51 | – | [218] |
a “Porosity” is the entire separator’s, instead of the coating’s. b “–” means not mentioned