Synthesis and Electrical Capacitance of Carbon Nanoplates

Carbon nanoplates with diameters and thicknesses of up to approximately 1.2 μm and 18 nm, respectively, were prepared by a reaction using CaC2, ferrocene, and NH4HCO3 as starting materials at 600 °C for 10 h. These carbon nanoplates form aggregates that have a specific surface area of up to 831 m2 g...

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Bibliographic Details
Published in:European Journal of Inorganic Chemistry 2010-09, Vol.2010 (27), p.4314-4320
Main Authors: Mei, Tao, Li, Ting, Bi, Huiyun, Wang, Liangbiao, Zhu, Yongchun, Qian, Yitai
Format: Article
Language:English
Subjects:
Aggregation
Capacitance properties
Carbon
Nanoplates
Nanostructures
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Summary:Carbon nanoplates with diameters and thicknesses of up to approximately 1.2 μm and 18 nm, respectively, were prepared by a reaction using CaC2, ferrocene, and NH4HCO3 as starting materials at 600 °C for 10 h. These carbon nanoplates form aggregates that have a specific surface area of up to 831 m2 g–1 and a specific capacitance of up to 184 F g–1 at a scanning rate of 10 mV s–1 in a 3 mol L–1 H2SO4 solution. Without using NH4HCO3, hexagonal carbon nanoplates with an average edge length of 500 nm and thickness of approximately 22 nm were obtained with a specific capacitance of up to 42 F g–1. If NaN3 or NaHCO3 was used instead of NH4HCO3, carbon nanoplates with a curved surface or irregular circular carbon nanoplates were obtained with specific capacitances of 87 or 36 F g–1, respectively. Several kinds of carbon nanoplates were successfully prepared. Aggregates of these carbon nanoplates exhibit capacitances ofup to 184 F g–1, which makes them potential candidates to be used as electrode material for supercapacitors.
ISSN:1434-1948
1099-0682
DOI:10.1002/ejic.201000387