'Ladder-doped’ polypyrrole

a possible electrode material for inclusion in electrochemical supercapacitors?

Malcolm D. Ingram, H. Staesche, K. S. Ryder

Research output: Contribution to journalArticle

63 Citations (Scopus)

Abstract

Polypyrrole (pPy) electrodes containing polysulfonated aromatic anions are investigated by cyclic voltammetry as electrodes for use in electrochemical supercapacitors. These ‘ladder-doped’ materials are deposited as thick films (ca. 10 μm) having open structures that permit the rapid insertion/ejection (up to 300 mV s−1) of cations and anions from aqueous solution, and give an effective or ‘geometric’ capacitance of up to 0.40 F cm−2. The ‘dual mode’ doping behaviour seems essential for good capacitive response. These electrodes show a remarkable tendency to perform better at high cycling rates, an effect attributed to the way the structure ‘self-organises’ during the self-doping process. Good electrode response depends on protecting the open structure containing hydrophilic ion-conducting channels.
Original languageEnglish
Pages (from-to)107-112
Number of pages6
JournalJournal of Power Sources
Volume129
Issue number1
Early online date23 Dec 2003
DOIs
Publication statusPublished - 15 Apr 2004

Fingerprint

electrochemical capacitors
polypyrroles
Polypyrroles
Ladders
electrode materials
ladders
inclusions
Electrodes
electrodes
Anions
Negative ions
Doping (additives)
anions
Ion Channels
Thick films
ejection
Cyclic voltammetry
thick films
Cations
insertion

Keywords

  • Supercapacitors
  • Polypyrrole
  • Dual mode behaviour
  • Hydrophilic channels

Cite this

'Ladder-doped’ polypyrrole : a possible electrode material for inclusion in electrochemical supercapacitors? / Ingram, Malcolm D.; Staesche, H.; Ryder, K. S.

In: Journal of Power Sources, Vol. 129, No. 1, 15.04.2004, p. 107-112.

Research output: Contribution to journalArticle

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