Issue 87, 2014

Effect of surface chemistry on the double layer capacitance of polypyrrole-derived ordered mesoporous carbon

Abstract

In this work, the effect of nitrogen on the double layer (DL) capacitance of nitrogen-doped ordered mesoporous carbon (NOMC) is studied. The nitrogen content of the NOMCs was controlled thermally. X-ray photoelectron spectroscopy shows decreasing nitrogen content with increasing heat treatment temperature. Despite the differing N content of the NOMCs, the BET surface area, pore size and distribution of the NOMCs did not change significantly with the heat treatment, though Raman spectroscopy and X-ray diffraction showed that the microcrystallinity was affected, exposing more of the basal planes with increased heat treatment temperature. The DL capacitance of the NOMCs was measured from cyclic voltammograms in a range that minimized the contribution of the space charge capacitance and pseudocapacitance, yielding information about the impact of oxygen and nitrogen functional groups on the pure Helmholtz behavior of NOMCs. It was found that nitrogen affects the DL capacitance by changing both the electronic properties and microstructure of the carbon. These enhancements resulted in NOMCs with very high areal Helmholtz capacitance of 25.1 μF cm−2.

Graphical abstract: Effect of surface chemistry on the double layer capacitance of polypyrrole-derived ordered mesoporous carbon

Article information

Article type
Paper
Submitted
22 août 2014
Accepted
16 sept. 2014
First published
16 sept. 2014

RSC Adv., 2014,4, 47039-47046

Author version available

Effect of surface chemistry on the double layer capacitance of polypyrrole-derived ordered mesoporous carbon

S. Shrestha, N. Morse and W. E. Mustain, RSC Adv., 2014, 4, 47039 DOI: 10.1039/C4RA09119A

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements