期刊
ENERGY & ENVIRONMENTAL SCIENCE
卷 4, 期 1, 页码 195-200出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c0ee00357c
关键词
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资金
- Center of Advanced Bionanosystems in Nanyang Technological University
A three-dimensional graphene material was doped with Ni-B nanoalloys via a chemical reduction process. The graphene doped with Ni (0.83 wt%) and B (1.09 wt%) shows the best hydrogen storage capacity of 4.4 wt% at 77 K and 106 kPa, which is better than that of pristine graphene by three times, and is also excellent among all carbon-based materials. Analysis of hydrogen isotherms and isosteric heat of adsorption suggests that doping with an appropriate amount of Ni-B nanoalloys can result in the dissociative chemisorption of hydrogen molecules by spillover to achieve the high hydrogen storage capacity.
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