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Title: Electrochemical supercapacitors

A new class of electrochemical capacitors provides in its charged state a positive electrode including an active material of a p-doped material and a negative electrode including an active material of an n-doped conducting polymer, where the p-doped and n-doped materials are separated by an electrolyte. In a preferred embodiment, the positive and negative electrode active materials are selected from conducting polymers consisting of polythiophene, polymers having an aryl group attached in the 3-position, polymers having aryl and alkyl groups independently attached in the 3- and 4-positions, and polymers synthesized from bridged dimers having polythiophene as the backbone. A preferred electrolyte is a tetraalykyl ammonium salt, such as tetramethylammonium trifluoromethane sulphonate (TMATFMS), that provides small ions that are mobile through the active material, is soluble in acetonitrile, and can be used in a variety of capacitor configurations.
Inventors:
 [1];  [2];  [1]
  1. (Los Alamos, NM)
  2. (Dallas, TX)
Issue Date:
OSTI Identifier:
870478
Assignee:
Regents of University of California, Office of Technology (Alameda, CA) LANL
Patent Number(s):
US 5527640
Application Number:
08/306214
Contract Number:
W-7405-ENG-36
Research Org:
Los Alamos National Laboratory (LANL), Los Alamos, NM
Country of Publication:
United States
Language:
English
Subject:
electrochemical; supercapacitors; capacitors; provides; charged; positive; electrode; including; active; material; p-doped; negative; n-doped; conducting; polymer; materials; separated; electrolyte; preferred; embodiment; selected; polymers; consisting; polythiophene; aryl; attached; 3-position; alkyl; independently; 3-; 4-positions; synthesized; bridged; dimers; backbone; tetraalykyl; ammonium; salt; tetramethylammonium; trifluoromethane; sulphonate; tmatfms; mobile; soluble; acetonitrile; variety; capacitor; configurations; conducting polymers; positive electrode; negative electrode; active material; preferred embodiment; conducting polymer; electrode including; active materials; electrode active; electrochemical capacitors; ammonium salt; electrochemical capacitor; /429/