Synthesis and characterization of B-substituted nanoporous carbons for hydrogen adsorption.

Katarzyna Walczak (1) , Catherine Journet-Gautier , P Llewellin (2) , Thomas Neisius , P Pfeifer (3) , B Kuchta (2) , Lucyna Firlej (1)

1 L2C - Laboratoire Charles Coulomb
2 MADIREL - Matériaux divisés, interfaces, réactivité, électrochimie
3 Mizzou Physics - Department of Physics and Astronomy [Columbia]

Here we explored the possibility to prepare boron-substituted nanoporous carbons, cheap, light and save material that was supposed [2,3] to reversibly store hydrogen by physisorption at room temperatures and moderated pressure (< 120 bar). We showed that electric arc discharge between graphite electrodes may be optimized to produce graphitized structures with a variety of graphene fragment sizes, forms, and interconnections between them. It also allows to introduce boron heteroatom into graphite-like structure. The as-synthetized material shows the hydrogen binding energy twice as high as unsubstituted carbons, but requires post-treatment (activation) as the its surface is low (~200 m2/g).

Domaines: Physique Numérique [physics.comp-ph]; Science des matériaux [cond-mat.mtrl-sci]

Katarzyna Walczak, Catherine Journet-Gautier, P Llewellin, Thomas Neisius, P Pfeifer, et al.. Synthesis and characterization of B-substituted nanoporous carbons for hydrogen adsorption.. WorldNano 2019, Apr 2019, Dubai, United Arab Emirates. ⟨hal-02116568⟩