H-2 Storage in Microporous Carbons from PEEK Precursors

Abstract

Large surface area (524-3275 m(2)/g) microporous carbons (MPCs) derived from poly(etheretherketone), or PEEK, have been synthesized and categorized for their roles as H-2 storage materials. It was found that, because of their very large surface areas (>= 3000 m(2)/g), large cumulative pore volumes (similar to 1.7 cm(3)/g), and small pore sizes (predominantly <= 3 nm), these materials displayed impressive H-2 sorption properties, including excess gravimetric and volumetric H-2 storage capacities of approximately 5 wt % and 35 g/L, respectively, at 77 K and 20 bar.