Relation between Charging Times and Storage Properties of Nanoporous Supercapacitors

Timur Aslyamov, Konstantin Sinkov, Iskander Akhatov

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

An optimal combination of power and energy characteristics is beneficial for the further progress of supercapacitors-based technologies. We develop a nanoscale dynamic electrolyte model, which describes both static capacitance and the time-dependent charging process, including the initial square-root dependency and two subsequent exponential trends. The observed charging time corresponds to one of the relaxation times of the exponential regimes and significantly depends on the pore size. Additionally, we find analytical expressions providing relations of the time scales to the electrode’s parameters, applied potential, and the final state of the confined electrolyte. Our numerical results for the charging regimes agree with published computer simulations, and estimations of the charging times coincide with the experimental values.

Original languageEnglish
Article number587
JournalNanomaterials
Volume12
Issue number4
DOIs
Publication statusPublished - 1 Feb 2022

Keywords

  • Charging time
  • Nanoporous electrodes
  • Supercapacitors

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