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Fabrication of 3-D nanodimensioned electric double layer capacitor structures using block copolymer templates

Research output: Contribution to journalArticleScientificpeer-review

Details

Original languageEnglish
Pages (from-to)5221-5227
Number of pages7
JournalJournal Nanoscience and Nanotechnology
Volume14
Issue number7
DOIs
Publication statusPublished - 2014
Publication typeA1 Journal article-refereed

Abstract

The need for materials for high energy storage has led to very significant research in supercapacitor systems. These can exhibit electrical double layer phenomena and capacitances up to hundreds of F/g. Here, we demonstrate a new supercapacitor fabrication methodology based around the microphase separation of PS-b-PMMA which has been used to prepare copper nanoelectrodes of dimension ~13 nm. These structures provide excellent capacitive performance with a maximum specific capacitance of ~836 F/g for a current density of 8.06 A/g at a discharge current as high as 75 mA. The excellent performance is due to a high surface area: volume ratio. We suggest that this highly novel, easily fabricated structure might have a number of important applications.

Keywords

  • 3-D Nanostructure, Block Copolymer, Capacitance, Copper Nanowires, PS-b-PMMA, Supercapacitor