Hydrogen storage in high surface area graphene scaffolds

Using an optimized KOH activation procedure we prepared highly porous graphene scaffold materials with SSA values up to 3400 m2 g−1 and a pore volume up to 2.2 cm3 g−1, which are among the highest for carbon materials. Hydrogen uptake of activated graphene samples was evaluated in a broad temperature interval (77–296 K). After additional activation by hydrogen annealing the maximal excess H2 uptake of 7.5 wt% was obtained at 77 K. A hydrogen storage value as high as 4 wt% was observed already at 193 K (120 bar H2), a temperature of solid CO2, which can be easily maintained using common industrial refrigeration methods.

Mercier, GuillaumeUmeå universitet,Institutionen för fysik(Swepub:umu)gume0003 (author)
Sharifi, TivaUmeå universitet,Institutionen för fysik(Swepub:umu)tish0004 (author)
Baburin, Igor A.Technische Universität Dresden, Theoretische Chemie, Bergstraße 66b, 01062 Dresden, Germany (author)
Seifert, GotthardTechnische Universität Dresden, Theoretische Chemie, Bergstraße 66b, 01062 Dresden, Germany (author)
Talyzin, Alexandr V.,1969-Umeå universitet,Institutionen för fysik(Swepub:umu)alta0001 (author)
Umeå universitetInstitutionen för fysik (creator_code:org_t)

In:Chemical Communications: Royal Society of Chemistry51:83, s. 15280-152831359-73451364-548X

By the author/editor: Klechikov, Alexe ...; Mercier, Guillau ...; Sharifi, Tiva; Baburin, Igor A.; Seifert, Gotthar ...; Talyzin, Alexand ...

About the subject

NATURAL SCIENCES: NATURAL SCIENCES; and Physical Science ...; and Condensed Matter ...

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