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Schemes for the use of conducting polymers as active materials in electrochemical supercapacitors.

DE93012713

Publication Date	1993
Personal Author	Rudge, A.; Davey, J.; Gottesfeld, S.; Ferraris, J. P.
Page Count	13
Abstract	The development of a novel conducting polymer based system for use in electrochemical capacitors is described. This system utilizes a new conducting polymer, poly-3-(4-fluorophenyl)-thiophene (PFPT), that can be reversibly n- and p-doped to high charge density. The electrochemical n-dopability of this material can be further improved by cycling in acetonitrile solution that contains a new electrolyte, tetramethylammonium trifluoromethanesulfonate (Me(sub 4)NCF(sub 3)SO(sub 3)). We discuss these improvements in n-dopability in terms of potential electronic and steric influences. We believe that the substituent fluorophenyl group does not communicate with the polythiophene backbone through resonance, and conclude that the ability to n-dope PFPT to high charge density may occur as a result of electron transfer reactions from the conducting polymer backbone into the substituent. This new system for electrochemical capacitors provides the best achievable performance from conducting polymers and generates high energy and power densities that are comparable with noble metal oxide systems, potentially at a fraction of the cost.
Keywords	Capacitors Organic Polymers Doped Materials Electrical Properties Electrochemistry Materials N-Type Conductors Organic Fluorine Compounds Polycyclic Sulfur Heterocycles Voltametry Meetings EDB/360606 EDB/400400
Source Agency	Technical Information Center Oak Ridge Tennessee
NTIS Subject Category	99C - Polymer Chemistry 99F - Physical & Theoretical Chemistry 46D - Solid State Physics
Corporate Authors	Los Alamos National Lab., NM.; Department of Energy, Washington, DC.
Supplemental Notes	Electrochemical Society meeting (183rd), Honolulu, HI (United States), 16-21 May 1993. Sponsored by Department of Energy, Washington, DC.
Document Type	Conference Proceedings
NTIS Issue Number	199321
Contract Number	W-7405-ENG-36

Schemes for the use of conducting polymers as active materials in electrochemical supercapacitors.

Schemes for the use of conducting polymers as active materials in electrochemical supercapacitors.
DE93012713

Publication Date	1993
Personal Author	Rudge, A.; Davey, J.; Gottesfeld, S.; Ferraris, J. P.
Page Count	13
Abstract	The development of a novel conducting polymer based system for use in electrochemical capacitors is described. This system utilizes a new conducting polymer, poly-3-(4-fluorophenyl)-thiophene (PFPT), that can be reversibly n- and p-doped to high charge density. The electrochemical n-dopability of this material can be further improved by cycling in acetonitrile solution that contains a new electrolyte, tetramethylammonium trifluoromethanesulfonate (Me(sub 4)NCF(sub 3)SO(sub 3)). We discuss these improvements in n-dopability in terms of potential electronic and steric influences. We believe that the substituent fluorophenyl group does not communicate with the polythiophene backbone through resonance, and conclude that the ability to n-dope PFPT to high charge density may occur as a result of electron transfer reactions from the conducting polymer backbone into the substituent. This new system for electrochemical capacitors provides the best achievable performance from conducting polymers and generates high energy and power densities that are comparable with noble metal oxide systems, potentially at a fraction of the cost.
Keywords	Capacitors Organic Polymers Doped Materials Electrical Properties Electrochemistry Materials N-Type Conductors Organic Fluorine Compounds Polycyclic Sulfur Heterocycles Voltametry Meetings EDB/360606 EDB/400400
Source Agency	Technical Information Center Oak Ridge Tennessee
NTIS Subject Category	99C - Polymer Chemistry 99F - Physical & Theoretical Chemistry 46D - Solid State Physics
Corporate Authors	Los Alamos National Lab., NM.; Department of Energy, Washington, DC.
Supplemental Notes	Electrochemical Society meeting (183rd), Honolulu, HI (United States), 16-21 May 1993. Sponsored by Department of Energy, Washington, DC.
Document Type	Conference Proceedings
NTIS Issue Number	199321
Contract Number	W-7405-ENG-36