Toward New Candidates for Hydrogen Storage:  High-Surface-Area Carbon Aerogels

Abstract

At 77 K, hydrogen surface excess sorption of carbon aerogels scales with BET surface area up to 2550 m2/g, yielding up to 5 wt % gravimetric density. The surface area dependence for the aerogel with a surface area of 3200 m2/g is somewhat weaker, with a gravimetric density of 5.3 wt %.