Journal
CARBON
Volume 84, Issue -, Pages 469-478Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2014.12.039
Keywords
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Funding
- National 973 Program of China [2014CB260411]
- National Science foundation of China [91123011, 11374205]
- Science and Technology Commission of Shanghai Municipality, China [12nm0503500]
- 863 Program of China [2012AA022603]
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Nanoporous graphene sheets were generated through a simple thermal annealing procedure using composites of ferrocene nanoparticles and graphene oxide sheets as precursors in a large scale. The morphology, composition, and formation mechanism of the as-obtained nanoporous graphene sheets were studied complementarily with scanning electron microscopy, transmission electron microscopy, X-ray powder diffraction, and other spectroscopy techniques. We found that the density of nanopores on the graphene sheet was determined by the surface distribution of oxygen-containing groups on the original graphene oxide sheets. The coin cells using nanoporous graphene sheets as anode materials showed higher specific lithium ion storage capacity, better discharge/charge rate capability and higher cycling stability when compared to the coin cells with graphene or chemically reduced graphene sheets as anodes. (C) 2014 Elsevier Ltd. All rights reserved.
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