Synthesis and characterization of modified silicas and carbons for use as electrodes in electrochemical supercapacitors – First annual report

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Authors
  1. Pickup, P.G.
  2. Rowe, A.
  3. Liu, X.
  4. DesRoches, D.
Corporate Authors
Defence R&D Canada - Atlantic, Dartmouth NS (CAN);Memorial Univ of Newfoundland, St John's Nfld (CAN) Dept of Chemistry
Abstract
A series of commercial high surface area carbons, ruthenium (Ru) oxide prepared in-house, and a series of carbon supported Ru oxide materials prepared in-house have been evaluated as capacitive materials for supercapacitors. A proton conducting organically modified silica gel has been evaluated as an electrode binder and shown to increase capacitances and decrease ionic resistances in carbon electrodes. Prototype supercapacitors have been built with Ru oxide and carbon electrodes. A device capacitance of 14 F has been demonstrated. The effective series resistance has been decreased to 0.24 Ω cm2. Average power densities during full discharge exceed 25 kW/kg (peak power > 100 kW/kg), and energy densities exceed 30 Wh/kg.

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Report Number
DRDC-ATLANTIC-CR-2007-120 — Contractor Report
Date of publication
01 Aug 2007
Number of Pages
56
DSTKIM No
CA031790
CANDIS No
530791
Format(s):
CD ROM

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