Coherent carbon cryogel-ammonia borane nanocomposites for H2 storage.
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Coherent carbon cryogel-ammonia borane (C-AB) nanocomposites were synthesized, and improved H2 storage properties are reported. Porous carbon cryogels were impregnated with AB in tetrahydrofuran solution at 25 degrees C under argon; 30% of the carbon cryogel pore volume was filled to produce a 24 wt % C-AB nanocomposite. Nitrogen sorption isotherms, X-ray diffraction, differential scanning calorimetry, differential thermal/thermal gravimetric analyses, mass spectrometry, and 11B NMR were used to characterize the coherent C-AB nanocomposites. Findings include a merged two-step hydrogen release reaction with an appreciable reduction in the dehydrogenation temperature to <90 degrees C as well as the suppression of borazine release. The possible nanosize effects on the H2 storage properties are discussed.
author list (cited authors)
Feaver, A., Sepehri, S., Shamberger, P., Stowe, A., Autrey, T., & Cao, G
complete list of authors
Feaver, Aaron||Sepehri, Saghar||Shamberger, Patrick||Stowe, Ashley||Autrey, Tom||Cao, Guozhong