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Study the Effect of MgFe2O4 Synthesized by Hydrothermal Method on The
Hydrogen Storage Performances of LiAlH4
Wan Noor Adila Binti Wan Hassan
Supervisor: Dr. Mohammad Bin Ismail
Bachelor of Applied Science (Electronics and Instrumentation Physics)
School of Ocean Engineering
In this study, catalytic effect of MgFe2O4 on the hydrogen storage performance of
LiAlH4 were investigated for the first time. The addition of MgFe2O4 shows improved
dehydrogenation performance compared with undoped LiAlH4. The onset desorption
temperatures for MgFe2O4-doped LiAlH4 sample was reduced from 147°C to 103°C for
the first stage reaction and from 177°C to 141°C for the second stage reaction
compared to as-milled LiAlH4. Kissinger analysis demonstrated that the apparent
activation energies of the first two dehydrogenation reactions of MgFe2O4-doped
LiAlH4 sample shows reduction of approximately 31 and 17 kJ/mol respectively. The
formation of an in situ active species of Fe and LiFeO2 is believed to play an important
role in improving the dehydrogenation performance of LiAlH4.
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