Schiff base covalent organic polymers as electrode material for supercapacitor application

Chokalingam Saravanan, Bosco Christin Maria Arputham Ashwin, Shanmugasundaram Manoj, Marimuthu Senthilkumaran, Venkatesan Sethuraman, Pamula Balaji Bhargav, Perumalsamy Ramasamy, Paulpandian Muthu Mareeswaran

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6 Scopus citations


Schiff base polymers having two different structures are synthesized by condensation polymerization using 4,4′-diamino diphenylamine sulfate hydrate with terephthalaldehyde and 2,4,6-Tris(p-formylphenoxy)-1,3,5-triazine (TRIPOD), named as COP-1 and COP-2. Nature of structural arrangement is studied using FT-IR and powder XRD techniques. The thermal stability of polymers is up to 250 °C, confirmed by TGA. SEM analysis of COP-1and COP-2 shows flaky, leaf veins and sheet like morphology. The calculated maximum areal capacitance values for both the COP-1 and COP-2, are 695 mF/cm2 and 771 mF/cm2 respectively at the applied current density of 1 mA cm−2. COP-2 has shown higher capacitance than COP-1 due to high content of nitrogen present in the polymer. The polymer coated nickel foam electrode exhibits substantial cyclic stability up to 1000 cycles, carried out at 20 mA cm−2.

Original languageEnglish
Article number132348
JournalMaterials Letters
StatePublished - 1 Aug 2022
Externally publishedYes

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© 2022 Elsevier B.V.


  • Areal capacitance
  • Cyclic stability
  • Pseudocapacitor
  • Schiff base
  • Supercapacitor


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