Solid-State NaBH<sub>4</sub>/Co Composite as Hydrogen Storage Material: Effect of the Pressing Pressure on Hydrogen Generation Rate
A solid-state NaBH<sub>4</sub>/Co composite has been employed as a hydrogen-generating material, as an alternative to sodium borohydride solutions, in the long storage of hydrogen. Hydrogen generation begins in the presence of cobalt-based catalysts, immediately after water is added to a...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-03-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/12/7/1184 |
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| author | Olga V. Netskina Elena S. Tayban Anna M. Ozerova Oxana V. Komova Valentina I. Simagina |
| author_facet | Olga V. Netskina Elena S. Tayban Anna M. Ozerova Oxana V. Komova Valentina I. Simagina |
| author_sort | Olga V. Netskina |
| collection | DOAJ |
| description | A solid-state NaBH<sub>4</sub>/Co composite has been employed as a hydrogen-generating material, as an alternative to sodium borohydride solutions, in the long storage of hydrogen. Hydrogen generation begins in the presence of cobalt-based catalysts, immediately after water is added to a NaBH<sub>4</sub>/Co composite, as a result of sodium borohydride hydrolysis. The hydrogen generation rate has been investigated as a function of the pressure used to press hydrogen-generating composites from a mechanical mixture of the hydride and cobalt chloride hexahydrate. The hydrogen generation rate was observed to increase with the increase of this pressure. Pre-reduction of the cobalt chloride, using a sodium borohydride solution, leveled this dependence with a two-fold decrease in the gas generation rate. According to TEM and XPS data, oxidation of the particles of the pre-reduced cobalt catalyst took place during preparation of the composites, and it is this oxidation that appears to be the main reason for its low activity in sodium borohydride hydrolysis. |
| first_indexed | 2024-04-13T01:01:21Z |
| format | Article |
| id | doaj.art-b03f9a4ff488420ea1155f690c41ded5 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-13T01:01:21Z |
| publishDate | 2019-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-b03f9a4ff488420ea1155f690c41ded52022-12-22T03:09:29ZengMDPI AGEnergies1996-10732019-03-01127118410.3390/en12071184en12071184Solid-State NaBH<sub>4</sub>/Co Composite as Hydrogen Storage Material: Effect of the Pressing Pressure on Hydrogen Generation RateOlga V. Netskina0Elena S. Tayban1Anna M. Ozerova2Oxana V. Komova3Valentina I. Simagina4Laboratory of Hydrides Investigation, Boreskov Institute of Catalysis SB RAS (BIC SB RAS), Novosibirsk 630090, RussiaLaboratory of Hydrides Investigation, Boreskov Institute of Catalysis SB RAS (BIC SB RAS), Novosibirsk 630090, RussiaLaboratory of Hydrides Investigation, Boreskov Institute of Catalysis SB RAS (BIC SB RAS), Novosibirsk 630090, RussiaLaboratory of Hydrides Investigation, Boreskov Institute of Catalysis SB RAS (BIC SB RAS), Novosibirsk 630090, RussiaLaboratory of Hydrides Investigation, Boreskov Institute of Catalysis SB RAS (BIC SB RAS), Novosibirsk 630090, RussiaA solid-state NaBH<sub>4</sub>/Co composite has been employed as a hydrogen-generating material, as an alternative to sodium borohydride solutions, in the long storage of hydrogen. Hydrogen generation begins in the presence of cobalt-based catalysts, immediately after water is added to a NaBH<sub>4</sub>/Co composite, as a result of sodium borohydride hydrolysis. The hydrogen generation rate has been investigated as a function of the pressure used to press hydrogen-generating composites from a mechanical mixture of the hydride and cobalt chloride hexahydrate. The hydrogen generation rate was observed to increase with the increase of this pressure. Pre-reduction of the cobalt chloride, using a sodium borohydride solution, leveled this dependence with a two-fold decrease in the gas generation rate. According to TEM and XPS data, oxidation of the particles of the pre-reduced cobalt catalyst took place during preparation of the composites, and it is this oxidation that appears to be the main reason for its low activity in sodium borohydride hydrolysis.https://www.mdpi.com/1996-1073/12/7/1184CO<sub>2</sub>-free fuelhydrogen-storage materialsodium borohydridehydrolysiscobalt catalyst |
| spellingShingle | Olga V. Netskina Elena S. Tayban Anna M. Ozerova Oxana V. Komova Valentina I. Simagina Solid-State NaBH<sub>4</sub>/Co Composite as Hydrogen Storage Material: Effect of the Pressing Pressure on Hydrogen Generation Rate Energies CO<sub>2</sub>-free fuel hydrogen-storage material sodium borohydride hydrolysis cobalt catalyst |
| title | Solid-State NaBH<sub>4</sub>/Co Composite as Hydrogen Storage Material: Effect of the Pressing Pressure on Hydrogen Generation Rate |
| title_full | Solid-State NaBH<sub>4</sub>/Co Composite as Hydrogen Storage Material: Effect of the Pressing Pressure on Hydrogen Generation Rate |
| title_fullStr | Solid-State NaBH<sub>4</sub>/Co Composite as Hydrogen Storage Material: Effect of the Pressing Pressure on Hydrogen Generation Rate |
| title_full_unstemmed | Solid-State NaBH<sub>4</sub>/Co Composite as Hydrogen Storage Material: Effect of the Pressing Pressure on Hydrogen Generation Rate |
| title_short | Solid-State NaBH<sub>4</sub>/Co Composite as Hydrogen Storage Material: Effect of the Pressing Pressure on Hydrogen Generation Rate |
| title_sort | solid state nabh sub 4 sub co composite as hydrogen storage material effect of the pressing pressure on hydrogen generation rate |
| topic | CO<sub>2</sub>-free fuel hydrogen-storage material sodium borohydride hydrolysis cobalt catalyst |
| url | https://www.mdpi.com/1996-1073/12/7/1184 |
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