Table 5
Summary of thickeners for various salt hydrate PCMs
| Salt hydrate PCMs | Thickeners | Latent heat capacity (J/g) | Reference | |
| Original | After cycling | |||
| Na2SO4·10H2O (3 wt.% Na2B4O7·10H2O) |
Attapulgite clay (9 wt.%) | ~238 (without thickener) | ~63 (20–40 cycles) | [67] |
| ~203 | ~105 (200 cycles) | |||
| CaCl2·6H2O (0.5 wt.% flake graphite) |
Super-absorbent polymer (25 wt.%) | 198.4 (without thickener) | − | [68] |
| 158.4 | − | |||
| CaCl2·6H2O/ChCl2
(2 wt.% SrCl2·6H2O) |
Silica fumes (2 wt.%) | 127.2 (without thickener) | − | [69] |
| 123.0 | 122.69 (100 cycles) | |||
| CH3COONa·3H2O (1 wt.% Na2HPO4·7H2O) |
Cellulose-based thickeners (30 wt.%) | ~243 (without thickener) | − | [70] |
| ~165 | − | |||
| CH3COONa·3H2O (0.5% Nano-Cu and 0.25% sodium dodecyl sulfonate) |
Carboxymethyl cellulose (3 wt.%) | 242.4 (without thickener) | − | [57] |
| 234.5 | 231.4 (50 cycles) | |||
| CH3COONa·3H2O (2 wt.% multi-wall carbon nanotubes) |
Xanthan gum (1 wt.%) | 257.7 (without thickener) | − | [5] |
| 250.2 | 241.3 (500 cycles) | |||
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