Issue 23, 2017

Low-temperature vapour phase polymerized polypyrrole nanobrushes for supercapacitors

Abstract

A low-temperature modified vapour-phase synthesis allows for the deposition of high aspect ratio, conductive and capacitive one-dimensional nanostructures of the conducting polymer polypyrrole onto three-dimensional fibrous substrates. Nanofibrillar polypyrrole resembling nanobrushes can be deposited at temperatures as low as 50 °C without the use of hard templates. When deposited on a conductive substrate such as hard carbon paper, the nanofibers exhibit a three-electrode specific capacitance of 144.7 F g−1 over a 1.2 V window in 1 M lithium perchlorate with good reversibility. Two electrode electrochemical capacitors fabricated using polypyrrole on hard carbon paper exhibit a specific energy ranging from 7 to 13 W h kg−1 based on average electrode active mass with a maximum charging voltage between 0.6 and 1 V. Furthermore, the devices can undergo 200 000 cycles while retaining 70% of their initial capacitance when charged to 0.6 V. This work represents a significant advance in the synthesis of nanostructured polypyrrole from the vapor phase.

Graphical abstract: Low-temperature vapour phase polymerized polypyrrole nanobrushes for supercapacitors

Supplementary files

Article information

Article type
Paper
Submitted
11 Janv. 2017
Accepted
09 Marts 2017
First published
22 Marts 2017

J. Mater. Chem. A, 2017,5, 11772-11780

Low-temperature vapour phase polymerized polypyrrole nanobrushes for supercapacitors

L. M. Santino, S. Acharya and J. M. D'Arcy, J. Mater. Chem. A, 2017, 5, 11772 DOI: 10.1039/C7TA00369B

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