High-performance carbon nanotube-implanted mesoporous carbon spheres for supercapacitors with low series resistance

Journal Article · Tue Nov 15 00:00:00 EST 2011 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2011.01.018· OSTI ID:22210143

Yi, Bin ^[1]; Chen, Xiaohua ^[1]; Guo, Kaimin ^[2]; Xu, Longshan ^[3]; Chen, Chuansheng ^[2]; Yan, Haimei; Chen, Jianghua ^[1]

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1. College of Materials Science and Engineering, Hunan University, Changsha 410082 (China)
2. College of Physics and Electronic Science, Changsha University of Science and Technology (China)
3. Department of Mechanical Engineering, Xiamen University of Technology, Xiamen 361024 (China)

Research highlights: {yields} CNTs-implanted porous carbon spheres are prepared by using gelatin as soft template. {yields} Homogeneously distributed CNTs form a well-develop network in carbon spheres. {yields} CNTs act as a reinforcing backbone assisting the formation of pore structure. {yields} CNTs improve electrical conductivity and specific capacitance of supercapacitor. -- Abstract: Carbon nanotube-implanted mesoporous carbon spheres were prepared by an easy polymerization-induced colloid aggregation method using gelatin as a soft template. Scanning electron microscopy, transmission electron microscopy and nitrogen adsorption-desorption measurements reveal that the materials are mesoporous carbon spheres, with a diameter of {approx}0.5-1.0 {mu}m, a specific surface area of 284 m{sup 2}/g and average pore size of 3.9 nm. Using the carbon nanotube-implanted mesoporous carbon spheres as electrode material for supercapacitors in an aqueous electrolyte solution, a low equivalent series resistance of 0.83 {Omega} cm{sup 2} and a maximum specific capacitance of 189 F/g with a measured power density of 8.7 kW/kg at energy density of 6.6 Wh/kg are obtained.

• OSTI ID: 22210143
• Journal Information: Materials Research Bulletin, Vol. 46, Issue 11; Other Information: Copyright (c) 2011 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
77 NANOSCIENCE AND NANOTECHNOLOGY
ADSORPTION
CARBON NANOTUBES
DESORPTION
ELECTRIC CONDUCTIVITY
ENERGY DENSITY
ENERGY STORAGE
GELATIN
POLYMERIZATION
PORE STRUCTURE
POROUS MATERIALS
POWER DENSITY
SCANNING ELECTRON MICROSCOPY
SPECIFIC SURFACE AREA
SYNTHESIS
TRANSMISSION ELECTRON MICROSCOPY