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Scalable Syntheses of Graphene Oxide and Reduced Graphene Oxide using Cascade Design Oxidation and Highly Basic Reduction Reactions
Published on: July 3, 2025
Thermally modulated multilayered graphene oxide for hydrogen storage
Byung Hoon Kim1, Won G Hong, Han Young Yu
1Division of Materials Science, Korea Basic Science Institute, Daejeon, Republic of Korea.
Physical Chemistry Chemical Physics : PCCP
|December 14, 2011
Summary
Multilayered graphene oxide (GO) shows significant hydrogen storage capacity up to 4.8 wt% at 9.0 MPa. Optimal interlayer spacing of 6.5 Å is crucial for efficient hydrogen uptake in this graphene-based material.
Area of Science:
- Materials Science
- Nanotechnology
- Chemical Engineering
Background:
- Hydrogen is a promising clean energy carrier.
- Efficient hydrogen storage materials are critical for its widespread adoption.
- Graphene-based materials offer unique properties for gas storage applications.
Purpose of the Study:
- To investigate the hydrogen storage capacity of multilayered graphene oxide (GO).
- To determine the effect of interlayer distance on hydrogen uptake.
- To assess the potential of GO as a practical hydrogen storage material.
Main Methods:
- High-pressure hydrogen (H2) isotherms were measured.
- Thermal annealing was used to modulate the interlayer distance of GO.
- First-principles calculations were employed for comparative analysis.
Main Results:
- Maximum hydrogen storage capacity of 4.8 (0.5) wt% was achieved at 77 K (298 K) and 9.0 MPa.
- The optimal GO interlayer distance for maximum H2 uptake was found to be 6.5 Å.
- This optimal distance aligns with theoretical predictions for graphite materials.
Conclusions:
- Multilayered graphene oxide is a viable material for hydrogen storage.
- The presence of minimal oxygen and hydroxyl functional groups is beneficial for GO's H2 storage performance.
- Further optimization of GO structure could enhance its hydrogen storage capabilities.
