Synthesis and Electrical Capacitance of Carbon Nanoplates

✍ Scribed by Tao Mei; Ting Li; Huiyun Bi; Liangbiao Wang; Yongchun Zhu; Yitai Qian

• Publisher: John Wiley and Sons
• Year: 2010
• Tongue: English
• Weight: 786 KB
• Volume: 2010
• Category: Article
• ISSN: 1434-1948
• DOI: 10.1002/ejic.201000387

✦ Synopsis

Abstract

Carbon nanoplates with diameters and thicknesses of up to approximately 1.2 μm and 18 nm, respectively, were prepared by a reaction using CaC~2~, ferrocene, and NH~4~HCO~3~ as starting materials at 600 °C for 10 h. These carbon nanoplates form aggregates that have a specific surface area of up to 831 m^2^ 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^ H~2~SO~4~ solution. Without using NH~4~HCO~3~, 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 NaN~3~ or NaHCO~3~ was used instead of NH~4~HCO~3~, carbon nanoplates with a curved surface or irregular circular carbon nanoplates were obtained with specific capacitances of 87 or 36 F g^–1^, respectively.