Supercapacitor performance of porous carbon nanofiber composites prepared by electrospinning polymethylhydrosiloxane (PMHS)/polyacrylonitrile (PAN) blend solutions

• Published in: Synthetic metals Vol. 161; no. 13; pp. 1211 - 1216
• Main Authors: Kim, Bo-Hye, Yang, Kap Seung, Woo, Hee-Gweon, Oshida, Kyoichi
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01.07.2011; Elsevier
• Subjects: Applied sciences; Capacitors; Capacitors. Resistors. Filters; Carbon fibers; Electrical engineering. Electrical power engineering; Electrospinning; Exact sciences and technology; Fibers and threads; Forms of application and semi-finished materials; Nanofibers; Polyacrylonitriles; Polymer industry, paints, wood; Polymer matrix composites; Polymethylhydrosiloxane; Porous carbon nanofiber composites; Silica; Specific surface; Supercapacitor; Supercapacitors; Technology of polymers; Various equipment and components; Porous carbon nanofiber composites; Electrospinning; Supercapacitor; Silica; Polymethylhydrosiloxane; Power density; Electrical conductivity; Electrical properties; Voltage current curve; Specific surface area; Composition effect; Nanofiber; Nanoporous materials; Experimental study; Precursor; Carbonization; Pore size; Pyrocarbon; Acrylonitrile polymer; Morphology; Manufacturing; Siloxane polymer; Specific capacity
• ISSN: 0379-6779; 1879-3290
• DOI: 10.1016/j.synthmet.2011.04.005

Porous carbon nanofiber composites (NFCs) were prepared by electrospinning blended solutions of polyacrylonitrile (PAN) and polymethylhydrosiloxane (PMHS) in N,N-dimethylformamide (DMF). A PMHS concentration of 5 wt% was regarded as the optimum concentration to obtain fibers of a uniform size with a homogeneous dispersion of silica, the maximum specific surface area and the highest conductivity (4.91 S cm −1) after heat treatment at 800 °C. The supercapacitor electrode prepared with 5 wt% PMHS had the highest specific capacitance, 126.86 F/g, and the highest energy density, 17.0–10.0 Wh/kg, in the range of 400–20,000 W/kg in a 6 M KOH aqueous solution.