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Protocol for Measuring the Thermal Properties of a Supercooled Synthetic Sand-water-gas-methane Hydrate Sample
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Tuning clathrate hydrates for hydrogen storage.
Huen Lee1, Jong-Won Lee, Do Youn Kim
1Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-701, Republic of Korea. h_lee@kaist.ac.kr
Nature
|April 9, 2005
Summary
Researchers developed a new method for hydrogen storage using binary-clathrate hydrates. This approach enhances hydrogen storage capacity to 4 wt% at modest pressures, making hydrogen energy more viable.
Area of Science:
- Materials Science
- Chemical Engineering
- Energy Storage
Background:
- Establishing a hydrogen economy requires safe and efficient hydrogen storage solutions.
- Current methods like chemical binding or adsorption face technical and cost limitations.
- Hydrogen clathrate hydrates show promise but require impractically high synthesis pressures.
Purpose of the Study:
- To improve hydrogen storage capacity in clathrate hydrates at lower pressures.
- To overcome the limitations of existing hydrogen storage strategies.
- To enable practical applications of hydrogen as a clean energy source.
Main Methods:
- Synthesized THF-containing binary-clathrate hydrates.
- Tuned the composition to facilitate hydrogen entry into both large and small cages.
- Utilized water-soluble hydrate promoters and small gaseous guests for stabilization.
Main Results:
- Achieved hydrogen storage capacities of approximately 4 wt%.
- Enabled storage at modest pressures, significantly lower than previous methods.
- Demonstrated low-pressure stability of the synthesized clathrate hydrates.
Conclusions:
- The developed method offers a practical and efficient approach for hydrogen storage.
- Tuning clathrate hydrate composition is a versatile strategy for enhancing hydrogen storage.
- This advancement contributes to the feasibility of a hydrogen-based economy.
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