Highly Mesoporous Carbon Electrodes for Electric Double-Layer Capacitors
- 1 January 2003
- journal article
- Published by The Electrochemical Society in Electrochemical and Solid-State Letters
- Vol. 6 (10), A214-A217
- https://doi.org/10.1149/1.1603011
Abstract
High Brunauer-Emmett-Teller method (BET) surface area and mesoporous activated carbons (ACs) were prepared by carbonization followed by activation of vinylidene chloride copolymer containing yttrium acetylacetonate Their performance as electrodes for electric double-layer capacitors (EDLCs) in nonaqueous electrolyte solution was evaluated and compared with those of commercial microporous ACs. The specific EDLC capacitances of the ACs with high BET surface area are higher than those of the low BET surface area ACs at low discharge current. At high discharge current, the capacitances of the mesoporous ACs are higher than those of microporous ones. This is attributed to smooth movement of organic electrolyte ions in mesopores. © 2003 The Electrochemical Society. All rights reserved.Keywords
This publication has 13 references indexed in Scilit:
- Improvement of Commercial Activated Carbon and Its Application in Electric Double Layer CapacitorsElectrochemical and Solid-State Letters, 2002
- Carbon materials for the electrochemical storage of energy in capacitorsCarbon, 2001
- Ultracapacitors: why, how, and where is the technologyJournal of Power Sources, 2000
- Analysis of non-uniform charge/discharge and rate effects in porous carbon capacitors containing sub-optimal electrolyte concentrationsJournal of Electroanalytical Chemistry, 2000
- Principles and applications of electrochemical capacitorsElectrochimica Acta, 2000
- Studies of activated carbons used in double-layer capacitorsJournal of Power Sources, 1998
- The Effect of Salt Concentration in Electrolytes on the Maximum Energy Storage for Double Layer CapacitorsJournal of the Electrochemical Society, 1997
- Electric double-layer capacitor using organic electrolyteJournal of Power Sources, 1996
- Electric Double‐Layer Capacitor Composed of Activated Carbon Fiber Cloth Electrodes and Solid Polymer Electrolytes Containing Alkylammonium SaltsJournal of the Electrochemical Society, 1994
- Comparison of the Electrochemical Properties of Electric Double-Layer Capacitors with an Aqueous Electrolyte and with a Nonaqueous ElectrolyteBulletin of the Chemical Society of Japan, 1990