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The Journal of Engineering

Preparation of pitch-based carbon materials using a template and an orthogonal array design for super capacitors

Content Provider	IET Digital Library
Author	Zhong, Cungui Cao, Qing Xie, Xiaoling Gong, Shilei Zhou, Chunmin Wang, Ying
Abstract	Coal tar pitches (CTPs) are used as a supercapacitor precursor because they are of low cost and produce high carbon yields. In this reported work, a simple and feasible method for the fabrication of pitch-based carbon electrode materials with high capacitance was established using nanosized oxides as a template and the potassium hydroxide (KOH) activation method. The preparation conditions were optimised using an orthogonal array design. The electrochemical performance of the electrode materials was examined by constructing a single electrode capacitor in 6 mol l−1 KOH electrolyte; specific surface area was determined by N2 adsorption–desorption analysis and textural characterisation was conducted by transmission electron microscopy. Results showed that the synthetic carbon material possessed the highest iodine adsorption value of 2238 mg g−1 under optimum conditions (Al2O3 used as the template, an activation temperature of 700°C and a CTP/template mass ratio of 1:1), a high capacitance of 258 F g−1 at a current density of 0.5 A g−1 and good cycle stability.
Starting Page	927
Ending Page	931
Page Count	5
Volume Number	9
e-ISSN	17500443
Issue Number	Issue 12, Dec (2014)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/mnl/9/12
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/mnl.2014.0493
Journal	Micro & Nano Letters
Publisher Date	2014-12-05
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Activation Temperature Adsorption Adsorption And Desorption Kinetics Alumina C-Al2O3 Capacitance Capacitor Carbon Coal Tar Coal Tar Pitches Current Density Desorption Electrochemical Conversion And Storage Electrochemical Electrodes Electrochemical Performance Electrochemistry And Electrophoresis Electrode Materials Electrolyte Evaporation And Condensation KOH Electrolyte Method of Preparation of Material N2 Adsorption-desorption Analysis Nanosized Oxides Nanostructured Material Orthogonal Array Design Pitch-based Carbon Material Potassium Hydroxide Activation Method Single Electrode Capacitor Sorption And Accommodation Coefficient Supercapacitor Surface Area Surface Chemistry Temperature 700 DegC Template Array Design Textural Characterisation Texture Transmission Electron Microscopy
Content Type	Text
Resource Type	Article

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