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

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...

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Bibliographic Details
Published in:Polymers 2016-11, Vol.8 (11), p.401-401
Main Authors: Li, Rebecca L, Lin, Cheng-Wei, Shao, Yuanlong, Chang, Che Wei, Yao, Fu-Kai, Kowal, Matthew D, Wang, Haosen, Yeung, Michael T, Huang, Shu-Chuan, Kaner, Richard B
Format: Article
Language:English
Subjects:
Aniline
Chains (polymeric)
Conducting polymers
Cycles
Oligomers
Polymerization
Stability
Stability analysis
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Summary: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.
ISSN:2073-4360
2073-4360
DOI:10.3390/polym8110401