Oxygen-rich microporous carbons with exceptional hydrogen storage capacity
Porous carbons have been extensively investigated for hydrogen storage but, to date, appear to have an upper limit to their storage capacity. Here, in an effort to circumvent this upper limit, we explore the potential of oxygen-rich activated carbons. We describe cellulose acetatederived carbons tha...
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| Format: | Article |
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Nature Publishing Group
2017
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| Online Access: | https://eprints.nottingham.ac.uk/47253/ |
| _version_ | 1848797500677292032 |
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| author | Blankenship, Troy Scott Balahmar, Norah Mokaya, Robert |
| author_facet | Blankenship, Troy Scott Balahmar, Norah Mokaya, Robert |
| author_sort | Blankenship, Troy Scott |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | Porous carbons have been extensively investigated for hydrogen storage but, to date, appear to have an upper limit to their storage capacity. Here, in an effort to circumvent this upper limit, we explore the potential of oxygen-rich activated carbons. We describe cellulose acetatederived carbons that combine high surface area (3800 m2 g-1) and pore volume (1.8 cm3 g-1) that arise almost entirely (> 90%) from micropores, with an oxygen-rich nature. The carbons exhibit enhanced gravimetric hydrogen uptake (8.1 wt% total, and 7.0 wt% excess) at -196 ºC and 20 bar, rising to a total uptake of 8.9 wt% at 30 bar, and exceptional volumetric uptake of 44 g l-1 at 20 bar, and 48 g l-1 at 30 bar. At room temperature they store up to 0.8 wt% (excess) and 1.2 wt% (total) hydrogen at only 30 bar, and their isosteric heat of hydrogen adsorption is above 10 kJ mol-1. |
| first_indexed | 2025-11-14T20:04:52Z |
| format | Article |
| id | nottingham-47253 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T20:04:52Z |
| publishDate | 2017 |
| publisher | Nature Publishing Group |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-472532020-05-04T19:17:40Z https://eprints.nottingham.ac.uk/47253/ Oxygen-rich microporous carbons with exceptional hydrogen storage capacity Blankenship, Troy Scott Balahmar, Norah Mokaya, Robert Porous carbons have been extensively investigated for hydrogen storage but, to date, appear to have an upper limit to their storage capacity. Here, in an effort to circumvent this upper limit, we explore the potential of oxygen-rich activated carbons. We describe cellulose acetatederived carbons that combine high surface area (3800 m2 g-1) and pore volume (1.8 cm3 g-1) that arise almost entirely (> 90%) from micropores, with an oxygen-rich nature. The carbons exhibit enhanced gravimetric hydrogen uptake (8.1 wt% total, and 7.0 wt% excess) at -196 ºC and 20 bar, rising to a total uptake of 8.9 wt% at 30 bar, and exceptional volumetric uptake of 44 g l-1 at 20 bar, and 48 g l-1 at 30 bar. At room temperature they store up to 0.8 wt% (excess) and 1.2 wt% (total) hydrogen at only 30 bar, and their isosteric heat of hydrogen adsorption is above 10 kJ mol-1. Nature Publishing Group 2017-11-16 Article PeerReviewed Blankenship, Troy Scott, Balahmar, Norah and Mokaya, Robert (2017) Oxygen-rich microporous carbons with exceptional hydrogen storage capacity. Nature Communications, 8 . 1545/1-1545/12. ISSN 2041-1723 hydrogen storage materials; materials chemistry; porous materials https://www.nature.com/articles/s41467-017-01633-x doi:10.1038/s41467-017-01633-x doi:10.1038/s41467-017-01633-x |
| spellingShingle | hydrogen storage materials; materials chemistry; porous materials Blankenship, Troy Scott Balahmar, Norah Mokaya, Robert Oxygen-rich microporous carbons with exceptional hydrogen storage capacity |
| title | Oxygen-rich microporous carbons with exceptional hydrogen
storage capacity |
| title_full | Oxygen-rich microporous carbons with exceptional hydrogen
storage capacity |
| title_fullStr | Oxygen-rich microporous carbons with exceptional hydrogen
storage capacity |
| title_full_unstemmed | Oxygen-rich microporous carbons with exceptional hydrogen
storage capacity |
| title_short | Oxygen-rich microporous carbons with exceptional hydrogen
storage capacity |
| title_sort | oxygen-rich microporous carbons with exceptional hydrogen
storage capacity |
| topic | hydrogen storage materials; materials chemistry; porous materials |
| url | https://eprints.nottingham.ac.uk/47253/ https://eprints.nottingham.ac.uk/47253/ https://eprints.nottingham.ac.uk/47253/ |