Facile strategy of using conductive additive supported NaMnPO4 nanoparticles for delivering high performance Na-ion supercapacitors

Ananya Chowdhury, Sudipta Biswas, Debabrata Mandal, Amreesh Chandra

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

A novel strategy of incorporating conducting additive to enhance the performance of NaMnPO4-based Na-ion supercapacitors is presented. It is observed that forming composite with a conducting polymer, leads to nearly two-fold increment in the specific capacitance of a Na-ion based system. The higher conductivity, fast Faradaic response alongside with greater number of ion transport channels lead to this improvement. Here, the best performance is obtained at an optimized polyaniline (PANi) percentage of 30 wt%, where a specific capacitance of 201 F g−1 at 1 A g−1 current density was observed. This is more than twice the value obtained by pure NaMnPO4. The fabricated supercapacitors also deliver 26.5 W h kg−1 specific energy and high cycling stability.

Original languageEnglish
Article number163733
JournalJournal of Alloys and Compounds
Volume902
DOIs
StatePublished - 5 May 2022
Externally publishedYes

Keywords

  • Composite
  • Conductive additive
  • Energy storage
  • Na-ion supercapacitor
  • Polyaniline

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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