Journal
FULLERENES NANOTUBES AND CARBON NANOSTRUCTURES
Volume 25, Issue 6, Pages 355-358Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/1536383X.2017.1305358
Keywords
Single-walled carbon nanotubes; Arc discharge; Hydrogen storage
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Funding
- Natural Science Foundation of China [51672221]
- China Aeronautical Science Fund [2014ZF53074]
- Northwestern Polytechnical University [Z2016002]
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Single-walled carbon nanotubes (SWCNTs, the mean diameter of 1.35 nm) were produced by a modified arc discharging furnace using a mixture powder of KCl and Co-Ni alloy as catalyst at 600 degrees C. The hydrogen storage capacity of SWCNTs was enhanced by the mechanism of atom hydrogen spillover from the supported catalyst. The temperature effect on the hydrogen storage capacity of as-grown SWCNTs was investigated. The relative experiments of SWCNT hydrogen uptake and release were carried out by a high-pressure volumetric gas-adsorption measurement system. The experimental results indicated that the hydrogen storage capacity of SWCNTs increased with the environmental temperatures decreasing. The hydrogen storage capacity of SWCNTs was up to 1.73 wt% at 77 K for 2 hours under the pressure of 10 MPa, and the corresponding releasing hydrogen capacity is about 1.23 wt% under ambient pressure.
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