Hydrogen storage properties of nanoconfined LiBH4-NaBH4
In this study a eutectic melting composite of 0.62LiBH4-0.38NaBH4 has been infiltrated in two nanoporous resorcinol formaldehyde carbon aerogel scaffolds with similar pore sizes (37 and 38 nm) but different BET surface areas (690 and 2358 m2/g) and pore volumes (1.03 and 2.64 mL/g). This investigati...
| Main Authors: | , , , |
|---|---|
| Format: | Journal Article |
| Published: |
2015
|
| Online Access: | http://hdl.handle.net/20.500.11937/14364 |
| _version_ | 1848748603559903232 |
|---|---|
| author | Javadian, P. Sheppard, Drew Buckley, Craig Jensen, T. |
| author_facet | Javadian, P. Sheppard, Drew Buckley, Craig Jensen, T. |
| author_sort | Javadian, P. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | In this study a eutectic melting composite of 0.62LiBH4-0.38NaBH4 has been infiltrated in two nanoporous resorcinol formaldehyde carbon aerogel scaffolds with similar pore sizes (37 and 38 nm) but different BET surface areas (690 and 2358 m2/g) and pore volumes (1.03 and 2.64 mL/g). This investigation clearly shows decreased temperature of hydrogen desorption, and improved cycling stability during hydrogen release and uptake of bulk 0.62LiBH4-0.38NaBH4 when nanoconfined into carbon nanopores. The hydrogen desorption temperature of bulk 0.62LiBH4-0.38NaBH4 is reduced by ~107 °C with the presence of carbon, although a minor kinetic variation is observed between the two carbon scaffolds. This corresponds to apparent activation energies, EA, of 139 kJ mol-1 (bulk) and 116-118 kJ mol-1 (with carbon aerogel). Bulk 0.62LiBH4-0.38NaBH4 has poor reversibility during continuous hydrogen release and uptake cycling, maintaining 22% H2 capacity after four hydrogen desorptions (1.6 wt.% H2). In contrast, nanoconfinement into the high surface area carbon aerogel scaffold significantly stabilizes the hydrogen storage capacity, maintaining ~70% of the initial capacity after four cycles (4.3 wt.% H2). |
| first_indexed | 2025-11-14T07:07:40Z |
| format | Journal Article |
| id | curtin-20.500.11937-14364 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:07:40Z |
| publishDate | 2015 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-143642017-10-06T00:38:25Z Hydrogen storage properties of nanoconfined LiBH4-NaBH4 Javadian, P. Sheppard, Drew Buckley, Craig Jensen, T. In this study a eutectic melting composite of 0.62LiBH4-0.38NaBH4 has been infiltrated in two nanoporous resorcinol formaldehyde carbon aerogel scaffolds with similar pore sizes (37 and 38 nm) but different BET surface areas (690 and 2358 m2/g) and pore volumes (1.03 and 2.64 mL/g). This investigation clearly shows decreased temperature of hydrogen desorption, and improved cycling stability during hydrogen release and uptake of bulk 0.62LiBH4-0.38NaBH4 when nanoconfined into carbon nanopores. The hydrogen desorption temperature of bulk 0.62LiBH4-0.38NaBH4 is reduced by ~107 °C with the presence of carbon, although a minor kinetic variation is observed between the two carbon scaffolds. This corresponds to apparent activation energies, EA, of 139 kJ mol-1 (bulk) and 116-118 kJ mol-1 (with carbon aerogel). Bulk 0.62LiBH4-0.38NaBH4 has poor reversibility during continuous hydrogen release and uptake cycling, maintaining 22% H2 capacity after four hydrogen desorptions (1.6 wt.% H2). In contrast, nanoconfinement into the high surface area carbon aerogel scaffold significantly stabilizes the hydrogen storage capacity, maintaining ~70% of the initial capacity after four cycles (4.3 wt.% H2). 2015 Journal Article http://hdl.handle.net/20.500.11937/14364 10.1016/j.ijhydene.2015.08.075 fulltext |
| spellingShingle | Javadian, P. Sheppard, Drew Buckley, Craig Jensen, T. Hydrogen storage properties of nanoconfined LiBH4-NaBH4 |
| title | Hydrogen storage properties of nanoconfined LiBH4-NaBH4 |
| title_full | Hydrogen storage properties of nanoconfined LiBH4-NaBH4 |
| title_fullStr | Hydrogen storage properties of nanoconfined LiBH4-NaBH4 |
| title_full_unstemmed | Hydrogen storage properties of nanoconfined LiBH4-NaBH4 |
| title_short | Hydrogen storage properties of nanoconfined LiBH4-NaBH4 |
| title_sort | hydrogen storage properties of nanoconfined libh4-nabh4 |
| url | http://hdl.handle.net/20.500.11937/14364 |