Flexible nickel Prussian blue analogue films for electrochromic and H2O2 sensing

We showed that nickel Prussian blue analogue (NiPBA) films were electrochemically deposited onto a conducting transparent indium tin oxide coated with polyethylene terephthalate electrodes. The flexible NiPBA films were characterized by means of scanning electron microscopy–energy dispersive X-ray s...

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Bibliographic Details
Published in:Journal of materials science. Materials in electronics 2020-09, Vol.31 (18), p.15434-15445
Main Authors: Eren, Esin, Uygun Oksuz, Aysegul
Format: Article
Language:English
Subjects:
Biosensors
Bleaching
Characterization and Evaluation of Materials
Chemistry and Materials Science
Coated electrodes
Electrochromism
Electrodes
Electrolytes
Energy storage
Graphene
Hydrogen peroxide
Indium tin oxides
Materials Science
Nanoparticles
Nickel
Optical and Electronic Materials
Pigments
Polyethylene terephthalate
Potassium
Scanning electron microscopy
Sensors
Thin films
Wearable computers
Wearable technology
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Summary:We showed that nickel Prussian blue analogue (NiPBA) films were electrochemically deposited onto a conducting transparent indium tin oxide coated with polyethylene terephthalate electrodes. The flexible NiPBA films were characterized by means of scanning electron microscopy–energy dispersive X-ray spectroscopy (SEM–EDS), X-ray photoelectronspectroscopy technique and X-ray diffraction analyses. Electrochromic performance of the flexible NiPBA films was investigated using cyclic voltammetry, chronoamperometry and chronocoulometry methods. The coloration, bleaching times and reversibility of the NiPBA film were calculated as 5.8 s, 2.7 s, and 97.37% in KCl liquid electrolyte medium, respectively. Electrocatalytic behavior of the NiPBA film towards H 2 O 2 sensor was also evaluated by chronoamperometry technique. The flexible NiPBA film showed a linear response to H 2 O 2 in concentration range of 3.92 to 15.68 mM ( R 2  = 0.9906), sensitivity of 1.6272 µAmM −1  cm −2 . After performing repeated bended cycle tests, the flexible NiPBA films showed good mechanical stability in terms of both electrochromic and H 2 O 2 sensing properties. The presented results can promote its potential application in wearable devices, displays, which are flexible states for monitoring.
ISSN:0957-4522
1573-482X
DOI:10.1007/s10854-020-04106-y