Boosting the de-/rehydrogenation properties of MgH2 with the addition of BaCoF4.
In this study, the effect of barium cobalt fluoride (BaCoF4) on the de-/rehydrogenation properties of magnesium hydride (MgH2) was investigated for the first time. It was found that the 10 wt% BaCoF4-added MgH2 sample began to release hydrogen at 265 °C, which was about 75 °C lesser than the post-mi...
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| Format: | Article |
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Elsevier Ltd.
2023
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| _version_ | 1811132292652859392 |
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| author | Yusnizam, N. Y. Ali, N. A. Sazelee, N. A. Nasef, M. M. Jalil, A. A. Ismail, M. |
| author_facet | Yusnizam, N. Y. Ali, N. A. Sazelee, N. A. Nasef, M. M. Jalil, A. A. Ismail, M. |
| author_sort | Yusnizam, N. Y. |
| collection | ePrints |
| description | In this study, the effect of barium cobalt fluoride (BaCoF4) on the de-/rehydrogenation properties of magnesium hydride (MgH2) was investigated for the first time. It was found that the 10 wt% BaCoF4-added MgH2 sample began to release hydrogen at 265 °C, which was about 75 °C lesser than the post-milled MgH2. Regarding dehydrogenation kinetic, the BaCoF4-added MgH2 composite rapidly released hydrogen 50 times faster than post-milled MgH2. The BaCoF4-added MgH2 sample released approximately 5.0 wt% within 30 min of dehydrogenation at 300 °C, whereas the post-milled MgH2 only released approximately 0.1 wt% hydrogen. Furthermore, the BaCoF4-added MgH2 sample obtained a hydrogen absorption capacity of 6.4 wt% in 5 min at 300 °C. In comparison, post-milled MgH2 absorbed only 5.5 wt% hydrogen in 5 min at 300 °C. Moreover, the addition of 10 wt% of BaCoF4 reduced the activation energy for the hydrogen desorption of MgH2 to 100.0 kJ/mol compared with 130.0 kJ/mol for the post-milled MgH2. The addition of BaCoF4 is believed to improve the hydrogen storage properties of MgH2 through the formation of the CoF3 and Ba or Ba-containing species during the dehydrogenation process, which plays a substantial role in lowering the desorption temperature and improves the sorption kinetics of MgH2. |
| first_indexed | 2024-09-24T00:01:00Z |
| format | Article |
| id | utm.eprints-106216 |
| institution | Universiti Teknologi Malaysia - ePrints |
| last_indexed | 2024-09-24T00:01:00Z |
| publishDate | 2023 |
| publisher | Elsevier Ltd. |
| record_format | dspace |
| spelling | utm.eprints-1062162024-06-20T02:11:28Z http://eprints.utm.my/106216/ Boosting the de-/rehydrogenation properties of MgH2 with the addition of BaCoF4. Yusnizam, N. Y. Ali, N. A. Sazelee, N. A. Nasef, M. M. Jalil, A. A. Ismail, M. TC Hydraulic engineering. Ocean engineering In this study, the effect of barium cobalt fluoride (BaCoF4) on the de-/rehydrogenation properties of magnesium hydride (MgH2) was investigated for the first time. It was found that the 10 wt% BaCoF4-added MgH2 sample began to release hydrogen at 265 °C, which was about 75 °C lesser than the post-milled MgH2. Regarding dehydrogenation kinetic, the BaCoF4-added MgH2 composite rapidly released hydrogen 50 times faster than post-milled MgH2. The BaCoF4-added MgH2 sample released approximately 5.0 wt% within 30 min of dehydrogenation at 300 °C, whereas the post-milled MgH2 only released approximately 0.1 wt% hydrogen. Furthermore, the BaCoF4-added MgH2 sample obtained a hydrogen absorption capacity of 6.4 wt% in 5 min at 300 °C. In comparison, post-milled MgH2 absorbed only 5.5 wt% hydrogen in 5 min at 300 °C. Moreover, the addition of 10 wt% of BaCoF4 reduced the activation energy for the hydrogen desorption of MgH2 to 100.0 kJ/mol compared with 130.0 kJ/mol for the post-milled MgH2. The addition of BaCoF4 is believed to improve the hydrogen storage properties of MgH2 through the formation of the CoF3 and Ba or Ba-containing species during the dehydrogenation process, which plays a substantial role in lowering the desorption temperature and improves the sorption kinetics of MgH2. Elsevier Ltd. 2023-12-10 Article PeerReviewed Yusnizam, N. Y. and Ali, N. A. and Sazelee, N. A. and Nasef, M. M. and Jalil, A. A. and Ismail, M. (2023) Boosting the de-/rehydrogenation properties of MgH2 with the addition of BaCoF4. Journal of Alloys and Compounds, 967 (171618). NA-NA. ISSN 0925-8388 http://dx.doi.org/10.1016/j.jallcom.2023.171618 DOI: 10.1016/j.jallcom.2023.171618 |
| spellingShingle | TC Hydraulic engineering. Ocean engineering Yusnizam, N. Y. Ali, N. A. Sazelee, N. A. Nasef, M. M. Jalil, A. A. Ismail, M. Boosting the de-/rehydrogenation properties of MgH2 with the addition of BaCoF4. |
| title | Boosting the de-/rehydrogenation properties of MgH2 with the addition of BaCoF4. |
| title_full | Boosting the de-/rehydrogenation properties of MgH2 with the addition of BaCoF4. |
| title_fullStr | Boosting the de-/rehydrogenation properties of MgH2 with the addition of BaCoF4. |
| title_full_unstemmed | Boosting the de-/rehydrogenation properties of MgH2 with the addition of BaCoF4. |
| title_short | Boosting the de-/rehydrogenation properties of MgH2 with the addition of BaCoF4. |
| title_sort | boosting the de rehydrogenation properties of mgh2 with the addition of bacof4 |
| topic | TC Hydraulic engineering. Ocean engineering |
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