Paper Title:
Double Templating Synthesis and Electrochemical Properties of Carbon Foams
  Abstract

In this paper, we demonstrated the synthesis and electrochemical properties of carbon foams for use as supercapacitor electrode materials. Carbon foams were prepared by double templating method in which emulsion and nanosilica were used as soft template and hard template, respectively. By using Span 80 and Tween 80 as emulsifiers, resorcinol/formaldehyde aqueous solution which contained nanosilica as aqueous phase and 1iquid paraffin as oil phase, an O/W emulsion was obtained. Carbon foams were obtained by emulsion polymerization, carbonization and the subsequent removal of the hard template. The as-prepared carbon foams were characterized by scanning electron microscopy (SEM), Brunauer-Emmett-Teller (BET) analyzer, and electrochemical workstation. The results indicate that the resultant carbon foams have specific surface area of 160 m2/g, total pore volume of 0.15 cm3/g and possess dual pore size distributions with macropore sizes of 0.5-2.0 μm and the most probable pore size of 4.1 nm. The electrochemical properties of the carbon foams have been investigated by cyclic voltammetry (CV) and galvanostatic charge- discharge with a three-electrode system in electrolyte of 6 mol/L KOH solution. The CV curves of the carbon foams show rectangular-like shape without obvious oxidation-reduction evolution peak, which suggests a typical nonfaradic adsorption/desorption reaction. The carbon foams present linear galvanostatic charge-discharge curve under the current densities of 1.0-5.0 A/g and their specific capacitance values are 60-90 F/g. The good electrochemical performances of carbon foams would provide candidate as electrode materials for supercapacitors.

  Info
Periodical
Advanced Materials Research (Volumes 347-353)
Chapter
Chapter 8: Energy Materials
Edited by
Weiguo Pan, Jianxing Ren and Yongguang Li
Pages
3400-3403
DOI
10.4028/www.scientific.net/AMR.347-353.3400
Citation
Y. Li, M. X. Liu, L. H. Gan, L. Yang, Z. J. Xu, X. G. Wang, L. W. Chen, "Double Templating Synthesis and Electrochemical Properties of Carbon Foams", Advanced Materials Research, Vols. 347-353, pp. 3400-3403, 2012
Online since
October 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Jin Feng Bai, Shi Yong Wu, Shao Feng Li, Wei Chen, Yan Li
Abstract:A novel tube-form asymmetrical carbon membrane based on phenol-formaldehyde resin (PFR) is proposed in this paper. The membrane is composed...
457
Authors: Ho Suk Ryu, Sang Won Lee, Ki Won Kim, Joo Hyun Ahn, Kwon Koo Cho, Gyu Bong Cho, Hyo Jun Ahn
Abstract:We investigated on the additive effect of carbon nanotube in the sulfur electrode on the first discharge curve and cycling property of...
1509
Authors: Qi Xia Liu, Tao Ji, Li Fen He, Qiang Gao
Chapter 2: Materials Science and Engineering
Abstract:Various jute-based activated carbon fibers were prepared by using jute fibers as raw materials, phosphoric acid as activating agent and...
1428
Authors: Lei Shan Chen
Chapter 2: Applications of Materials in Manufacturing Technologies, Materials Science and Engineering
Abstract:Carbon nanotubes based on anodic aluminum nano-templates embedded with different metal catalysts were synthesized and the influence on the...
534