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| Thesis Name： |
Hydrogen storage in molecular compounds |
| Usage： |
Hydrogen storage |
| Keyword： |
molecular compounds |
| Remarks： |
At low temperature (T) and high pressure (P), gas molecules can be held in ice cages to form crystalline molecular compounds that may have application for energy storage. We synthesized a hydrogen clathrate hydrate, H2(H2O)2, that holds 50 g/liter hydrogen by volume or 5.3 wt %. The clathrate, synthesized at 200–300 MPa and 240–249 K, can be preserved to ambient P at 77 K. The stored hydrogen is released when the clathrate is warmed to 140 K at ambient P. Low T also stabilizes other molecular compounds containing large amounts of molecular hydrogen, although not to ambient P, e.g., the stability field for H2(H2O) filled ice (11.2 wt % molecular hydrogen) is extended from 2,300 MPa at 300 K to 600 MPa at 190 K, and that for (H2)4CH4 (33.4 wt % molecular hydrogen) is extended from 5,000 MPa at 300 K to 200 MPa at 77 K. These unique characteristics show the potential of developing low-T molecular crystalline compounds as a new means for hydrogen storage.
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| Original file： |
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Promulgator Detail |
| Full name: |
hichem |
| Country: |
CN |
| City: |
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| Company Name: |
hichem |
| Homepage: |
http://www.teloon.com |
| E-mail: |
reply |
| Phone: |
86-411-82819585 |
| Fax: |
86-411-82819612 |
| Company Address: |
Renming Road, Dalian city, Lianning pro,china |
| Zip/Postal Code: |
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| Introduction: |
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