Bifuctional indigocarmin­intercalated Ni­Al layered double hydroxide: investigation of characteristics for pigment and supercapacitor application

Authors

  • Vadym Kovalenko Ukrainian State University of Chemical Technology Gagarina ave., 8, Dnipro, Ukraine, 49005 Vyatka State University Moskovskaya str., 36, Kirov, Russian Federation, 610000, Ukraine https://orcid.org/0000-0002-8012-6732
  • Valerii Kotok Ukrainian State University of Chemical Technology Gagarina ave., 8, Dnipro, Ukraine, 49005 Vyatka State University Moskovskaya str., 36, Kirov, Russian Federation, 610000, Ukraine https://orcid.org/0000-0001-8879-7189

DOI:

https://doi.org/10.15587/1729-4061.2020.201282

Keywords:

Ni-Al layered double hydroxide, pigment, specific capacity, supercapacitor, discharge plateau

Abstract

In the modern world, one promising direction is the production and use of multifunction compounds. Ni-Al layered double hydroxide is widely used as the active material in supercapacitors. Nickel compounds are also colored and can be used as pigments. The characteristics of bi-functional indigo carmine intercalated Ni-Al (Ni:Al=4:1) hydroxides, synthesized at an equilibrium рН and рН=14 have been studied. The crystal structure of the prepared samples was studied by means of X-ray diffraction analysis and thermogravimetry, pigment characteristics – by measuring and calculating color characteristics in CIELab and XYZ systems, electrochemical characteristics – cyclic voltammetry and galvanostatic charge-discharge cycling. Comparative analysis of the electrochemical characteristics of Ni-Al-indigo carmine and Ni-Al-carbonate hydroxides has been conducted. Using XRD and thermogravimetry analysis methods, it was found that Ni-Al–indigo carmine hydroxide is a layered double hydroxide with the structure of α-Ni(OH)2 with average (synthesis at рН=14 and low (synthesis at equilibrium рН) crystallinity. It was found that synthesized Ni-Al-indigo carmine LDH had color bordering between light and blue (color tone 483–485 nm) with the lightness of 40–50 % and average color purity. It was found that the specific capacity of indigo carmine intercalated Ni-Al LDH (synthesis at рН=14 exceeded that of carbonate intercalated: the maximum specific capacity at full discharge was 1,007 F/g hydroxide and 2,996 F/h Ni, at discharge to 0 В –946 F/g. First, for Ni-Al-indigo carmine LDH, two discharge plateaus were observed, which correspond to the discharge of Ni3+ and indigo carmine

Author Biographies

Vadym Kovalenko, Ukrainian State University of Chemical Technology Gagarina ave., 8, Dnipro, Ukraine, 49005 Vyatka State University Moskovskaya str., 36, Kirov, Russian Federation, 610000

PhD, Associate Professor

Department of Analytical Chemistry and Food Additives and Cosmetics

Senior Researcher

Competence center "Ecological technologies and systems"

Valerii Kotok, Ukrainian State University of Chemical Technology Gagarina ave., 8, Dnipro, Ukraine, 49005 Vyatka State University Moskovskaya str., 36, Kirov, Russian Federation, 610000

PhD, Associate Professor

Department of Processes, Apparatus and General Chemical Technology

Senior Researcher

Competence center "Ecological technologies and systems"

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2020-04-30

How to Cite

Kovalenko, V., & Kotok, V. (2020). Bifuctional indigocarmin­intercalated Ni­Al layered double hydroxide: investigation of characteristics for pigment and supercapacitor application. Eastern-European Journal of Enterprise Technologies, 2(12 (104), 30–39. https://doi.org/10.15587/1729-4061.2020.201282

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Vol. 2 No. 12 (104) (2020): Materials Science

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Materials Science

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