Synthesis of mesoporous carbon by using polymer blend as template for the high power supercapacitor

• Published in: Diamond and related materials 2009-02, Vol.18 (2), p.448-451
• Main Authors: Chang, Kai-Wen, Lim, Zheng-Yi, Du, Fang-Yi, Yang, Yi-Lin, Chang, Chia-Hsien, Hu, Chi-Chang, Lin, Hong-Ping
• Format: Article
• Language: English
• Subjects: Condensed matter: structure, mechanical and thermal properties; Diffusion; interface formation; Exact sciences and technology; Gelatin; Mesoporous carbon; Physics; Polymer blend; Solid surfaces and solid-solid interfaces; Structure and morphology; thickness; Supercapacitor; Surfaces and interfaces; thin films and whiskers (structure and nonelectronic properties); Thin film structure and morphology
• ISSN: 0925-9635; 1879-0062
• DOI: 10.1016/j.diamond.2008.10.003

The mesoporous carbon hollow spheres with high surface area, mesoporous shell (pore size > 7.0 nm) and macroporous interior (> 50.0 nm) have been easily prepared by using gelatin-phenol formaldehyde polymer blend as organic template. Because of short diffusion pathways, the existence of the ion-buffering reservoirs, and the absence of microspores, the mesoporous carbon hollow spheres demonstrate a large specific capacitance of about 132 Fg − 1 at scan rate of 25 mVs − 1 , and superior retention (≈ 90%) in capacitance even at high scan rate to 1000 mVs − 1 . In addition, the cyclic voltammetry (CV) profiles of the resulted carbons retain symmetrically rectangular shape at all voltage sweep rate between 25 and 1000 mVs − 1 .