Tunable morphology and property of a MnO2/carbonized cotton textile hybrid electrode for electrochemical capacitors

Yani Zhang, Tianyan Mao, Laifei Cheng, Heng Wu, Rui Wu, Lianxi Zheng

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

Abstract

There is an increasing demand of low cost, flexible, stable, and environmentally benign power sources for emerging wearable electronic equipment. Herein, we develop electrochemical capacitor electrodes based on MnO2/carbonized cotton textile with high mass-loading and tunable morphology. After a simple carbonization process, the cotton cloth with high surface area (585 m2 g−1) served as 3D binder-free and flexible scaffolds to anchor MnO2 nanostructures. The morphology of MnO2 nanostructures was tuned and optimized into curled sheet-like, which provided large surface area and could also release large local stress. Electrochemical measurements showed that the curled sheet-like MnO2 had a specific capacitance of 465 F g−1 at 0.1 A g−1, and exhibited an excellent cyclic stability with a specific capacitance retention ratio of 95% after 5000 cycles (at 10 A g−1). Due to the flexible nature of cotton textile, the hybrid electrodes could be bent freely, and the capacitance and cyclability almost remained unchanged even at a bending angle of 150°. Such flexible and stable electrodes from low cost and environmentally benign biomass offer new development potentials for energy storage and wearable electronic applications.

Original languageBritish English
Pages (from-to)655-662
Number of pages8
JournalJournal of Alloys and Compounds
Volume729
DOIs
StatePublished - 2017

Keywords

  • Capacitors
  • Carbonized cotton textile
  • Cyclability
  • MnO
  • Tunable morphology

Fingerprint

Dive into the research topics of 'Tunable morphology and property of a MnO2/carbonized cotton textile hybrid electrode for electrochemical capacitors'. Together they form a unique fingerprint.

Cite this