TY  - JOUR
AU  - Milanović, Igor
AU  - Milošević Govedarović, Sanja
AU  - Kurko, Sandra
AU  - Medić Ilić, Mirjana
AU  - Rajnović, Dragan
AU  - Cvetković, Slobodan
AU  - Grbović Novaković, Jasmina
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5313
AB  - MgH2 based composites combined with NaNH2 were synthesized by mechanical milling for
three different milling times ranging from 15 to 60 minutes. Microstructure and particle
size of the samples were analyzed by SEM microscopy while desorption properties were
followed by Thermal Desorption Spectroscopy (TDS). The kinetic properties of NaNH2-
MgH2 composites were investigated by isoconversional kinetic method as implemented in
code developed by our group. Composites show hydrogen desorption peaks shifted to
lower temperatures in comparison to mechanically modified and as received MgH2. All
NaNH2-MgH2 composites show enhanced kinetics with lowered apparent activation energy
(Ea) in comparison to milled MgH2. The mechanism of desorption changes from Avrami
eErofeev n ¼ 3 for as received MgH2 to AvramieErofeev n ¼ 4 for composite materials.
The change from 3 to 4 can be due to the modification of the nucleation process or a change
in the dimensionality of the growth. Those high values of n disregard a diffusion control as
a rate limiting step. It has been shown that there is a synergistic effect on the enhanced
hydrogen storage performance of chemical reaction and structural changes caused by ball
milling. This can be used as a starting point for synthesis of innovative hydrogen storage
materials.
PB  - Elsevier
T2  - International Journal of Hydrogen Energy
T1  - Improving of hydrogen desorption kinetics of MgH2 by NaNH2 addition: Interplay between microstructure and chemical reaction
VL  - 47
IS  - 69
SP  - 29858
EP  - 29865
DO  - 10.1016/j.ijhydene.2022.06.302
ER  - 

@article{
author = "Milanović, Igor and Milošević Govedarović, Sanja and Kurko, Sandra and Medić Ilić, Mirjana and Rajnović, Dragan and Cvetković, Slobodan and Grbović Novaković, Jasmina",
year = "2022",
abstract = "MgH2 based composites combined with NaNH2 were synthesized by mechanical milling for
three different milling times ranging from 15 to 60 minutes. Microstructure and particle
size of the samples were analyzed by SEM microscopy while desorption properties were
followed by Thermal Desorption Spectroscopy (TDS). The kinetic properties of NaNH2-
MgH2 composites were investigated by isoconversional kinetic method as implemented in
code developed by our group. Composites show hydrogen desorption peaks shifted to
lower temperatures in comparison to mechanically modified and as received MgH2. All
NaNH2-MgH2 composites show enhanced kinetics with lowered apparent activation energy
(Ea) in comparison to milled MgH2. The mechanism of desorption changes from Avrami
eErofeev n ¼ 3 for as received MgH2 to AvramieErofeev n ¼ 4 for composite materials.
The change from 3 to 4 can be due to the modification of the nucleation process or a change
in the dimensionality of the growth. Those high values of n disregard a diffusion control as
a rate limiting step. It has been shown that there is a synergistic effect on the enhanced
hydrogen storage performance of chemical reaction and structural changes caused by ball
milling. This can be used as a starting point for synthesis of innovative hydrogen storage
materials.",
publisher = "Elsevier",
journal = "International Journal of Hydrogen Energy",
title = "Improving of hydrogen desorption kinetics of MgH2 by NaNH2 addition: Interplay between microstructure and chemical reaction",
volume = "47",
number = "69",
pages = "29858-29865",
doi = "10.1016/j.ijhydene.2022.06.302"
}

Milanović, I., Milošević Govedarović, S., Kurko, S., Medić Ilić, M., Rajnović, D., Cvetković, S.,& Grbović Novaković, J.. (2022). Improving of hydrogen desorption kinetics of MgH2 by NaNH2 addition: Interplay between microstructure and chemical reaction. in International Journal of Hydrogen Energy
Elsevier., 47(69), 29858-29865.
https://doi.org/10.1016/j.ijhydene.2022.06.302

Milanović I, Milošević Govedarović S, Kurko S, Medić Ilić M, Rajnović D, Cvetković S, Grbović Novaković J. Improving of hydrogen desorption kinetics of MgH2 by NaNH2 addition: Interplay between microstructure and chemical reaction. in International Journal of Hydrogen Energy. 2022;47(69):29858-29865.
doi:10.1016/j.ijhydene.2022.06.302 .

Milanović, Igor, Milošević Govedarović, Sanja, Kurko, Sandra, Medić Ilić, Mirjana, Rajnović, Dragan, Cvetković, Slobodan, Grbović Novaković, Jasmina, "Improving of hydrogen desorption kinetics of MgH2 by NaNH2 addition: Interplay between microstructure and chemical reaction" in International Journal of Hydrogen Energy, 47, no. 69 (2022):29858-29865,
https://doi.org/10.1016/j.ijhydene.2022.06.302 . .