Cotton fabric decorated with manganese oxide nanorods as a supercapacitive flexible electrode for wearable electronics

Edmund Samuel, Bhavana Joshi, Yongil Kim, Chanwoo Park, Ali Aldalbahi, Mohamed El-Newehy, Hae Seok Lee, Sam S. Yoon

Research output: Contribution to journalArticlepeer-review

Abstract

We present the fabrication (using a hydrothermal process) and the properties of wearable fabrics decorated with ultrathin manganese oxide (MnO2) nanorods for supercapacitor applications. The superior mechanical durability of the supercapacitor was confirmed by cyclic voltammetry (CV) curves, which showed little change during 1000 bending cycles. The pseudocapacitive properties of the ultrathin MnO2 nanorods were confirmed by recording the CV curves at various scan rates. The galvanostatic charge–discharge curves at various specific currents confirmed the pseudocapacitance of MnO2. The ultrathin MnO2 nanorods exhibited a superior capacitance of 508 F·g−1 and an energy density of 35.3 Wh·kg−1. The MnO2 electrode with optimal properties demonstrated stable long-term cycling performance with 90% retention after 10,000 galvanostatic cycles.

Original languageEnglish
Article number150968
JournalApplied Surface Science
Volume568
DOIs
Publication statusPublished - 2021 Dec 1

Keywords

  • Cotton fabric
  • Manganese oxide
  • Ultrafine nanostructures
  • Wearable supercapacitors

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

Fingerprint

Dive into the research topics of 'Cotton fabric decorated with manganese oxide nanorods as a supercapacitive flexible electrode for wearable electronics'. Together they form a unique fingerprint.

Cite this