Table 6.
The characteristics and electrochemical performance of in situ modified separators by inorganic materials
| Separator | Coating thickness | Porositya (%) | Coating mass fraction (%) | Electrolyte contact angle | Electrolyte uptake | Ionic conductivity (mS cm–1) at RT | Cyclic performance | References |
|---|---|---|---|---|---|---|---|---|
| PP/Al2O3 (ALD) | 6 nm | 44 | 40.1 | –b | – | – | 80% after 1000 cycles at 4C | [148] |
| PVDF/Al2O3 (ALD) | 10 nm | 87 | - | 22° | 350% | 3.1 | 91% after 100 cycles at 0.2C (original) 100% after 100 cycles at 0.2C (modified) | [149] |
| PE/PP/PE/Al2O3 (ALD) | 5 nm | 49 | 8.5 | 34.5° | 260% | 75% after 100 cycles at 1C (original) 85% after 100 cycles at 1C (modified) | [150] | |
| PP/TiO2 (ALD) | 1 nm | 41 | 3.5 | 38.4° | – | – | 91% after 100 cycles at 5C | [151] |
| PI/SiO2 | – | 61 | 14.3 | 6.8° | 264% | 88% after 100 cycles at 1C | [152] | |
| PI/ZrO2 | – | 83 | 7.65 | 18° | 345% | 3.73 | 100% after 100 cycles at 1C | [153] |
| CNFs/Sn-MoS2 | – | – | - | – | – | – | 51% after 500 cycles at 2C (original) 73% after 500 cycles at 2C (modified) | [154] |
| PP/CoSO2 | 12.1 μm | – | - | – | – | – | 46% after 500 cycles at 1C (original) 62% after 500 cycles at 1C (modified) | [155] |
| PP/GDY | < 2 μm | – | - | – | – | – | < 10% after 500 cycles at 1C (original) 53% after 500 cycles at 1C (modified) | [156] |
a “Porosity” is the entire separator’s, instead of the coating’s. b “–” means not mentioned