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pEDOT:Vitamin K1 Composites: An Electrochemical Study on Stable, Water‐Permeable, Proton‐Bonding Thin‐Film Electrodes
Author(s) -
Mayevsky David,
WintherJensen Bjorn
Publication year - 2018
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201702543
Subject(s) - redox , pedot:pss , electrochemistry , materials science , electrode , polymer , composite number , proton , conductive polymer , chemical engineering , cathode , composite material , polymer chemistry , chemistry , physics , quantum mechanics , engineering , metallurgy
Herein we report detailed electrochemical studies of a conducting polymer composite that is engineered to selectively react with protons and that has reactive sites across the entirety of the volume due to the excellent water permeability throughout the film. This chemically modified electrode (CME) utilises a conducting polymer as the source of charge carrier and Vitamin‐K as the water‐insoluble redox species that bonds protons in reduction and releases protons in oxidation. The overall number of active proton bonding sites was found to be 1.36 × 10 16 sites/cm 2 , with a redox capacity of ∼64 mAh/g, which makes this CME comparable to modern inorganic cathodes. The electrode exhibited insignificant degradation after 500 cycles. The composite is relatively simple to manufacture as it requires no purification steps as part of the processing.