Development and study of mediator-enhanced polymer electrolyte supercapacitors

Xiangyang Zhou, Juanjuan Zhou, Yijin Yin, Azzam N. Mansour

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Scopus citations

Abstract

All solid-state supercapacitors were prepared using activated carbon, polymer electrolytes, i.e. Nation and mediators, I-/I3-. The mediators have potential to provide high pseudocapacitance and to greatly reduce the internal resistance. Cyclic voltammetry studies were conducted to evaluate the specific energy, specific power and stability of the mediator-enhanced polymer electrolyte supercapacitors (MEPESCs). Scanning electron microscopy, energy dispersive spectroscopy, X-ray photoelectron spectroscopy, surface area and porosimetry studies were conducted to examine the structural and chemical characteristics of the MEPESC electrodes. The results indicate that the leakage free MEPESCs not only provide high specific energy and power but also ease and flexibility for fabrication and packaging of energy storage devices. The results also suggest that the MEPESCs can be further improved by mitigating the aggregation/segregation of the mediators, eliminating the surface coating, promoting solvation of iodine ions, and reducing crossover of iodine.

Original languageEnglish (US)
Title of host publicationSeparators and Membranes for Batteries, Capacitors, Fuel Cells, and Other Electrochemical Systems
Pages9-22
Number of pages14
Edition30
DOIs
StatePublished - Dec 1 2009
EventSeparators and Membranes for Batteries, Capacitors, Fuel Cells, and Other Electrochemical Systems - 215th ECS Meeting - San Francisco, CA, United States
Duration: May 24 2009May 29 2009

Publication series

NameECS Transactions
Number30
Volume19
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Other

OtherSeparators and Membranes for Batteries, Capacitors, Fuel Cells, and Other Electrochemical Systems - 215th ECS Meeting
CountryUnited States
CitySan Francisco, CA
Period5/24/095/29/09

ASJC Scopus subject areas

  • Engineering(all)

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  • Cite this

    Zhou, X., Zhou, J., Yin, Y., & Mansour, A. N. (2009). Development and study of mediator-enhanced polymer electrolyte supercapacitors. In Separators and Membranes for Batteries, Capacitors, Fuel Cells, and Other Electrochemical Systems (30 ed., pp. 9-22). (ECS Transactions; Vol. 19, No. 30). https://doi.org/10.1149/1.3253359