Investigations on the aging effect of supercapacitors

F. Parigi, Y. Gao, M. Casares, T. Gachovska, Y. S. Zhou, Y. F. Lu, D. Patterson, J. L. Hudgins

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

Abstract

In this paper, the degradation processes of commercial supercapacitors aged at 2.7 V and 65°C for 2000 h were studied. The crystallinity, thermal stability, and specific surface areas of the carbon electrodes of the supercapacitors were measured. Significant changes and degradations in the carbon electrodes were observed for the aged supercapacitors. New functional groups were also found on the surface of the electrodes. The degradation of the lattice structures and the reduction in the specific surface area were as well observed for the aged supercapacitors. It was suggested that the aging of supercapacitors significantly changed the electrode surface which affects considerably electrical properties and functionality of supercapacitors. We have also performed experiments which suggest that the aging effect on the electrode is not uniformly distributed through its length.

Original languageEnglish (US)
Title of host publicationNanostructured Materials for Energy Storage
Pages35-40
Number of pages6
DOIs
StatePublished - 2011
Event2011 MRS Spring Meeting - San Francisco, CA, United States
Duration: Apr 25 2011Apr 29 2011

Publication series

NameMaterials Research Society Symposium Proceedings
Volume1333
ISSN (Print)0272-9172

Conference

Conference2011 MRS Spring Meeting
CountryUnited States
CitySan Francisco, CA
Period4/25/114/29/11

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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