Ball milling time (h) | Hydrogen absorption conditions | Hydrogen absorption capacity (wt%) | References |
2 | 295 K, 400 bar | 1.4 | [44] |
10 | 295 K, 50 bar | 1.09 | [45] |
2 | 295 K, 40 bar | 1.35 | [44] |
2 | 295 K, 20 bar | ~1.0 | [44] |
2 | 308 K, 60 bar | ~1.0 | [46] |
20 | 298 K, 250 bar | 1.3 | [47] |
36 | 303 K, ~80 bar | 1.5 | [18] [18] |
38 | RTa, ~27 bar | ~1.1 | [48] |
40 | RT, ~19 bar | 0.94 | [49] |
90 | 298 K, 50 bar | ~1.3 | [50] |
2 | RT, 20 bar | 0.9 | [37] |
6 | RT, 20 bar | 1.0 | [37] |