Nano Archive

Polymeric nanomaterials as electrolyte and electrodes in supercapacitors

Trigueiro, João-Paulo. C. and Borges, Raquel S. and Lavall, Rodrigo L. and Calado, Hallen D. R. and Silva, Glaura G. (2009) Polymeric nanomaterials as electrolyte and electrodes in supercapacitors. Nano Research, 2 (9). pp. 733-739.

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The energy challenge requires a broad range of options for energy harvesting, storage, and conversion. We have produced polymeric coatings by spraying, to be used as electrolyte and electrodes in a flexible electrochemical double layer capacitor. A thermoplastic polyurethane and a low molecular weight block copolyether were employed with LiClO4 to prepare solid polymeric electrolytes. Carbon black (CB) and multi-walled carbon nanotubes (MWNTs) were dispersed in the polymer blend electrolyte to produce nanostructured composite electrodes. The conductivities increased with the addition of block copolyether and carbon nanotubes to the electrolyte and electrode, respectively. Scanning electron microscopy (SEM) and atomic force microscope (AFM) images of the nanocomposite electrodes showed nanoagglomerates of CB connected by carbon nanotubes. The solid supercapacitor prepared with these new materials as electrolyte and electrodes showed superior performance to other similar systems. The resulting safe and flexible multilayer device can meet the requirements of modern devices.

Item Type:Article
ID Code:8042
Deposited By:Prof. Alexey Ivanov
Deposited On:06 Feb 2010 11:11
Last Modified:17 Feb 2010 16:40

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