Screening Protocol for the Electrochemical Characterization of Potential Supercapacitor Materials

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Authors
  1. Huber, T.A.
  2. Kopac, M.C.
  3. Wong, F.
Corporate Authors
Defence R&D Canada - Atlantic, Dartmouth NS (CAN);Victoria Univ, Victoria BC (CAN)
Abstract
A method for the preparation and measurement of potential active materials for supercapacitor electrodes was developed and validated. An ethanolic suspension of the active material was applied to carbon fibre fabric, and allowed to dry. The electrode (active material and carbon support) was affixed in a half cell assembly that allowed consistent placement of the reference electrode. The electrode was characterized in deaerated 0.5 M H2SO4 (aq) by cyclic voltammetry, electrochemical impedance spectroscopy, and constant current charge discharge experiments. The electrode preparation method, and half cell assembly was determined to be highly reproducible, resulting in accurate electrochemical characterization of the active material. Using this method, the capacitance of two potential supercapacitor materials was evaluated: PAni-PTSA was determined to have a capacitance of ~ 300 F/g and PAni-2NSA/MWCNT was found to have a capacitance of ~ 153 F/g.

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Report Number
DRDC-ATLANTIC-TM-2009-279 — Technical Memorandum
Date of publication
01 Nov 2009
Number of Pages
40
DSTKIM No
CA034262
CANDIS No
533671
Format(s):
Electronic Document(PDF)

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