Hydrogen Storage in Nanostructured Carbons by Spillover: Bridge-Building Enhancement

• DOI: 10.1021/la051659r
• Publication Date: 2005-11-15T05:57:38Z
• Authors: Anthony J. Lachawiec; Gongshin Qi; Ralph T. Yang
• Keywords: Hydrogen spillover; Spillover effect; Carbon fibers

The hydrogen storage capacity in nanostructured carbon materials can be increased by atomic spillover from a supported catalyst. A simple and effective technique was developed to build bridges that serve improve contact between source secondary receptor. In this work, catalyst (Pd−C) served as the of atoms via dissociation primary AX-21 or single-walled nanotubes (SWNTs) were receptors. By carbonizing bridge-forming precursor presence components, adsorption amount factor 2.9 for receptor 1.6 SWNT at 298 K 100 kPa. Similar results obtained 10 MPa, indicating enhancement is weak function pressure. with had highest absolute 1.8 wt % MPa. Reversibility demonstrated through desorption readsorption K. bridge-building process appears specific, optimization may yield even greater enhancement. Using technique, enhancements up 17-fold on other carbon-based have been observed will reported elsewhere shortly.