Electrochemical Supercapacitors – Final Report

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Authors
  1. Freund, M.S.
  2. Suppes, G.
Corporate Authors
Defence R&D Canada - Atlantic, Dartmouth NS (CAN);Manitoba Univ, Winnipeg MAN (CAN) Dept of Chemistry
Abstract
This report summarizes results from the final year of this three-year project in developing supercapacitor electrode materials based on conducting polymers. Polypyrrole, formed by the controlled growth polymerization method, was combined with carbon nanotubes in an attempt to improve the electronic and ionic conductivity of polymer films. Single-walled nanotubes were successfully dispersed in water and tetrahydrofuran using phosphomolybdic acid. However, polypyrrole films containing single walled nanotubes did not show any improved performance. Poly(3,4-ethylenedioxythiophene) (PEDOT) films were grown electrochemically on carbon paper using phosphotungstic acid (PTA) as a dopant. The resulting PEDOT/PTA films were used as negative electrodes in an asymmetric supercapacitor cells, resulting in improved power and energy density compared to symmetric designs.

Il y a un résumé en français ici.

Report Number
DRDC-ATLANTIC-CR-2009-233 — Contractor Report
Date of publication
01 Nov 2009
Number of Pages
48
DSTKIM No
CA034200
CANDIS No
533616
Format(s):
Electronic Document(PDF)

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