Repository logo
 

Characterization of Aniline Tetramer by MALDI TOF Mass Spectrometry upon Oxidative and Reductive Cycling.

Published version
Peer-reviewed

Type

Article

Change log

Authors

Li, Rebecca L 
Lin, Cheng-Wei 
Shao, Yuanlong 
Chang, Che Wei 
Yao, Fu-Kai 

Abstract

By combining electrochemical experiments with mass spectrometric analysis, it is found that using short chain oligomers to improve the cycling stability of conducting polymers in supercapacitors is still problematic. Cycling tests via cyclic voltammetry over a potential window of 0 to 1.0 V or 0 to 1.2 V in a two-electrode device configuration resulted in solid-state electropolymerization and chain scission. Electropolymerization of the aniline tetramer to generate long chain oligomers is shown to be possible despite the suggested decrease in reactivity and increase in intermediate stability with longer oligomers. Because aniline oligomers are more stable towards reductive cycling when compared to oxidative cycling, future conducting polymer/oligomer-based pseudocapacitors should consider using an asymmetric electrode configuration.

Description

Keywords

conducting polymers, degradation mechanism, mass spectroscopy, oligomers, supercapacitors

Journal Title

Polymers (Basel)

Conference Name

Journal ISSN

2073-4360
2073-4360

Volume Title

8

Publisher

MDPI AG