Rehydrogenation of Sodium Borates to Close the NaBH<sub>4</sub>-H<sub>2</sub> Cycle: A Review
In 2007, the US Department of Energy recommended a no-go on NaBH<sub>4</sub> hydrolysis for onboard applications; however, the concept of a NaBH<sub>4</sub>-H<sub>2</sub>-PEMFC system has the potential to become a primary source for on-demand power supply. Despite...
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MDPI AG
2021-06-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/14/12/3567 |
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| author | Helder X. Nunes Diogo L. Silva Carmen M. Rangel Alexandra M. F. R. Pinto |
| author_facet | Helder X. Nunes Diogo L. Silva Carmen M. Rangel Alexandra M. F. R. Pinto |
| author_sort | Helder X. Nunes |
| collection | DOAJ |
| description | In 2007, the US Department of Energy recommended a no-go on NaBH<sub>4</sub> hydrolysis for onboard applications; however, the concept of a NaBH<sub>4</sub>-H<sub>2</sub>-PEMFC system has the potential to become a primary source for on-demand power supply. Despite the many efforts to study this technology, most of the published papers focus on catalytic performance. Nevertheless, the development of a practical reaction system to close the NaBH<sub>4</sub>-H<sub>2</sub> cycle remains a critical issue. Therefore, this work provides an overview of the research progress on the solutions for the by-product rehydrogenation leading to the regeneration of NaBH<sub>4</sub> with economic potential. It is the first to compare and analyze the main types of processes to regenerate NaBH<sub>4</sub>: thermo-, mechano-, and electrochemical. Moreover, it considers the report by Demirci et al. on the main by-product of sodium borohydride hydrolysis. The published literature already reported efficient NaBH<sub>4</sub> regeneration; however, the processes still need more improvements. Moreover, it is noteworthy that a transition to clean methods, through the years, was observed. |
| first_indexed | 2024-03-10T10:23:34Z |
| format | Article |
| id | doaj.art-7a9b158aef77435cac88a54bf226aafc |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T10:23:34Z |
| publishDate | 2021-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-7a9b158aef77435cac88a54bf226aafc2023-11-22T00:15:16ZengMDPI AGEnergies1996-10732021-06-011412356710.3390/en14123567Rehydrogenation of Sodium Borates to Close the NaBH<sub>4</sub>-H<sub>2</sub> Cycle: A ReviewHelder X. Nunes0Diogo L. Silva1Carmen M. Rangel2Alexandra M. F. R. Pinto3Transport Phenomena Research Center, Chemical Engineering Department, Faculty of Engineering, University of Porto, Dr. Roberto Frias s/n, 4200-465 Porto, PortugalTransport Phenomena Research Center, Chemical Engineering Department, Faculty of Engineering, University of Porto, Dr. Roberto Frias s/n, 4200-465 Porto, PortugalNational Laboratory of Energy and Geology, Estrada da Portela, 1649-038 Lisboa, PortugalTransport Phenomena Research Center, Chemical Engineering Department, Faculty of Engineering, University of Porto, Dr. Roberto Frias s/n, 4200-465 Porto, PortugalIn 2007, the US Department of Energy recommended a no-go on NaBH<sub>4</sub> hydrolysis for onboard applications; however, the concept of a NaBH<sub>4</sub>-H<sub>2</sub>-PEMFC system has the potential to become a primary source for on-demand power supply. Despite the many efforts to study this technology, most of the published papers focus on catalytic performance. Nevertheless, the development of a practical reaction system to close the NaBH<sub>4</sub>-H<sub>2</sub> cycle remains a critical issue. Therefore, this work provides an overview of the research progress on the solutions for the by-product rehydrogenation leading to the regeneration of NaBH<sub>4</sub> with economic potential. It is the first to compare and analyze the main types of processes to regenerate NaBH<sub>4</sub>: thermo-, mechano-, and electrochemical. Moreover, it considers the report by Demirci et al. on the main by-product of sodium borohydride hydrolysis. The published literature already reported efficient NaBH<sub>4</sub> regeneration; however, the processes still need more improvements. Moreover, it is noteworthy that a transition to clean methods, through the years, was observed.https://www.mdpi.com/1996-1073/14/12/3567hydrogensodium borohydrideregeneration of sodium borohydridethermochemical processesmechano-chemical processeselectrochemical processes |
| spellingShingle | Helder X. Nunes Diogo L. Silva Carmen M. Rangel Alexandra M. F. R. Pinto Rehydrogenation of Sodium Borates to Close the NaBH<sub>4</sub>-H<sub>2</sub> Cycle: A Review Energies hydrogen sodium borohydride regeneration of sodium borohydride thermochemical processes mechano-chemical processes electrochemical processes |
| title | Rehydrogenation of Sodium Borates to Close the NaBH<sub>4</sub>-H<sub>2</sub> Cycle: A Review |
| title_full | Rehydrogenation of Sodium Borates to Close the NaBH<sub>4</sub>-H<sub>2</sub> Cycle: A Review |
| title_fullStr | Rehydrogenation of Sodium Borates to Close the NaBH<sub>4</sub>-H<sub>2</sub> Cycle: A Review |
| title_full_unstemmed | Rehydrogenation of Sodium Borates to Close the NaBH<sub>4</sub>-H<sub>2</sub> Cycle: A Review |
| title_short | Rehydrogenation of Sodium Borates to Close the NaBH<sub>4</sub>-H<sub>2</sub> Cycle: A Review |
| title_sort | rehydrogenation of sodium borates to close the nabh sub 4 sub h sub 2 sub cycle a review |
| topic | hydrogen sodium borohydride regeneration of sodium borohydride thermochemical processes mechano-chemical processes electrochemical processes |
| url | https://www.mdpi.com/1996-1073/14/12/3567 |
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