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Review Article

Current Research Trends and Perspectives on Solid-State Nanomaterials in Hydrogen Storage

Table 7

Hydrogenation/dehydrogenation conditions, activation energy (Ea), and hydrogen capability of hydrides.

Storage mediaStorage conditions
Temp. (K)/Press. (bar)
(kJ/mol)Hydrogen capability (wt%)Dehydrogenation conditions
Temp. (K)/Press. (bar)
Ref

LiH1183/1.0181.212.7[195]
MgH2557/1.0174 [236, 237]7.6553/0.9[196, 197]
MgH2 (5 wt% V-doped)473/10119 [236, 237]5.8573/0.15[189]
MgH2 (5 wt% Ni-doped)473/1075 [236, 237]5.0573 / 0.15[189]
MgH2 (Ti-Nb-doped)(a) 673/40
(b) 573/40
50.7(a) 6.8
(b) 5.7
(a) 673/1.0
(b) 573/1.0
[238]
MgH2 (TiH2-doped)573/2016.44.6573/0.01[239]
MgH2 (Cr2O3-doped)573/1–286 [236, 237]6.4573/1–2[189]
MgH2 (Nb2O5-doped)573/8.4957.0573/vacuum[240]
MgFeH6623/2.721665.0623/0.001[241]
MgH2 (5 nm)333/201.34358/0.003[218]
MgH2 (5 nm)473/3525(abs)/79(des)6.0473/vacuum[219]
MgH2 (2.8 nm)355/332.8352/–[242]
MgH2 (6.0 nm, graphene composite)473/3023(abs)/65(des)5.4473/0.01[243]
MgH2 (5.5 nm, deposit on AC)453/1031(abs)/43(des)6.63453/0.01[222]
MgH2 (3 nm, graphene composite)523/20118.95.6598/vacuum[223]
MgH2 (Carbon composite)387/206.0773/vacuum[244]
MgH2 (≤27 nm, deposit on carbon aerogels)628/503.1628/vacuum[245]
MgH2 (30–50 nm, nanowire)573/4–2033.5(abs)/38.8(des)7.6573/0.2–6[224]
PdH0.6298/0.02710.56[246]