| http://www.w3.org/ns/prov#value | - For at least a hydrogen storage reactive material 12, the inert coating material(s) 14, 16 may be selected from, but is/are not limited to, polyvinylidene difluoride (PVDF), celluloses such as ethylcellulose and methyl cellulose polymers, polystyrene of either mixed molecular weight or of a predetermined molecular weight, acrylic polymers such as polymethylmethacrylate, polyvinyl chlorides, acetal
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