Direct mass determination of hydrogen uptake using a quartz crystal microbalance
- Department of Chemistry and Biochemistry, Northern Illinois University, DeKalb, Illinois 60115 (United States)
The authors demonstrate the application of a quartz crystal microbalance for direct mass determination of hydrogen uptake in storage materials in the pressure range of 0-40 bars. The frequency shift of a quartz crystal coated with hydrogen absorbing materials is affected by the hydrogen mass uptake on the crystal, the pressure and the viscosity of the gases, and the crystal surface roughness, of which the roughness contribution has no analytical expression. Through a control experiment on the same crystal in helium, the roughness contribution in hydrogen can be derived and the frequency shift due to the hydrogen mass uptake can be obtained.
- OSTI ID:
- 21016154
- Journal Information:
- Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 11 Vol. 91; ISSN APPLAB; ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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