Calcination process of porous metal–organic frameworks derived from nickel sulfide composites for supercapacitor and computer vision for investigating the porosity-electrochemical correlation

T. Indumathi, Sivalingam Ramesh, Neela Gayathri Ganesan, Raju Suresh Kumar, Heung Soo Kim, C. Karikal Chozhan, Vijay Kakani, Chandrasekaran Karthikeyan, Yuvaraj Haldorai

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

The utilization of metal–organic framework nanostructured electrode materials in supercapacitors and sensor applications is achieved by various chemical methods. In this study, we create NiS and NiS@MOF-BDC by employing nickel precursors and benzene dicarboxylic acid (BDC) as chelating organic linkers through a thermal reduction procedure at a temperature of 400 °C to produce the composite. The composite heterostructure enhanced the conductivity, porous characteristics, and diverse potential morphological qualities. The production of composite electrodes demonstrates a specific capacity of 260F/g (104C/g) when subjected to a current density of 1A/g. Additionally, these electrodes exhibit exceptional cyclic stability, enduring 5000 cycles, when used with a 2 M KOH electrolyte. Moreover, the synthesized composite HR-TEM images were analyzed using computer vision and AI techniques for estimating the porosity and investigating the enhanced electrochemical correlation.

Original languageEnglish
Article number118537
JournalJournal of Electroanalytical Chemistry
Volume969
DOIs
StatePublished - 15 Sep 2024

Keywords

  • Composite electrode
  • Cyclic stability and excellent retention capabilities and computer vision-AI based porosity estimation
  • Hybrid supercapacitor
  • NiS@Ni-MOF-BDC

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