Journal
CARBON
Volume 48, Issue 10, Pages 2968-2973Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2010.04.037
Keywords
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Funding
- Chinese National Science Foundation [U0734002]
- Shanghai Nanotechnology Promotion Center [0852nm0500]
- Shanghai Basic Key Program [09JC1415100]
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Mesoporous nitrogen-doped carbons activated using potassium hydroxide have large surface areas and high pore volumes, are studied for their hydrogen storage properties. The activated material can store 6.84 wt.% of hydrogen at 77 K under a pressure of 20 bar, which is estimated to correspond to a maximum capacity of 8.24 wt.% based on the Langmuir simulation. The hydrogen adsorption values show linear relationships with the volumes of micropores and small mesopores under those conditions, which indicates that the small mesopores between the sizes 2 and 3 nm also make contributions to the hydrogen adsorption at high pressure. (C) 2010 Elsevier Ltd. All rights reserved.
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