An International Laboratory Comparison Study of Volumetric and Gravimetric Hydrogen Adsorption Measurements
In order to determine a material's hydrogen storage potential, capacity measurements must be robust, reproducible, and accurate. Commonly, research reports focus on the gravimetric capacity, and often times the volumetric capacity is not reported. Determining volumetric capacities is not as str...
Saved in:
Published in | Chemphyschem Vol. 20; no. 15; pp. 1997 - 2009 |
---|---|
Main Authors | , , , , , , , , , , , , , , , , , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
Germany
Wiley Subscription Services, Inc
05.08.2019
Wiley-VCH Verlag ChemPubSoc Europe |
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | In order to determine a material's hydrogen storage potential, capacity measurements must be robust, reproducible, and accurate. Commonly, research reports focus on the gravimetric capacity, and often times the volumetric capacity is not reported. Determining volumetric capacities is not as straight‐forward, especially for amorphous materials. This is the first study to compare measurement reproducibility across laboratories for excess and total volumetric hydrogen sorption capacities based on the packing volume. The use of consistent measurement protocols, common analysis, and figure of merits for reporting data in this study, enable the comparison of the results for two different materials. Importantly, the results show good agreement for excess gravimetric capacities amongst the laboratories. Irreproducibility for excess and total volumetric capacities is attributed to real differences in the measured packing volume of the material.
Storage potential: To determine a material's hydrogen storage potential, capacity measurements must be robust, reproducible and accurate. Commonly, reports focus on gravimetric capacity, and often neglect the volumetric capacity. This is the first study to compare measurement reproducibility for excess and total volumetric hydrogen sorption capacities based on the packing volume. The results show good agreement for excess gravimetric capacities and irreproducibility for excess and total volumetric capacities that is attributed to differences in the measured packing volume of the material. |
---|---|
Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 SAND-2018-13651J USDOE Office of Energy Efficiency and Renewable Energy (EERE), Fuel Cell Technologies Office (EE-3F) AC04-94AL85000 |
ISSN: | 1439-4235 1439-7641 |
DOI: | 10.1002/cphc.201900166 |