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Materials 2012, 5(7), 1258-1266; doi:10.3390/ma5071258

Pseudocapacitive Effects of N-Doped Carbon Nanotube Electrodes in Supercapacitors

Department of Polymer Science and Engineering, Inha University, Incheon 402-751, Korea
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Received: 2 July 2012 / Revised: 13 July 2012 / Accepted: 17 July 2012 / Published: 19 July 2012
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Abstract

Nitrogen- and micropore-containing carbon nanotubes (NMCNTs) were prepared by carbonization of nitrogen-enriched, polymer-coated carbon nanotubes (CNTs), and the electrochemical performances of the NMCNTs with different heteroatom contents were investigated. NMCNTs-700 containing 9.1 wt% nitrogen atoms had a capacitance of 190.8 F/g, which was much higher than that of pristine CNTs (48.4 F/g), despite the similar surface area of the two CNTs, and was also higher than that of activated CNTs (151.7 F/g) with a surface area of 778 m2/g and a nitrogen atom content of 1.2 wt%. These results showed that pseudocapacitive effects play an important role in the electrochemical performance of supercapacitor electrodes. View Full-Text
Keywords: pseudocapacitance; supercapacitor; carbon nanotubes pseudocapacitance; supercapacitor; carbon nanotubes
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Yun, Y.S.; Park, H.H.; Jin, H.-J. Pseudocapacitive Effects of N-Doped Carbon Nanotube Electrodes in Supercapacitors. Materials 2012, 5, 1258-1266.

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