Back to results
US 2004/0106041 A1Published application
Poly (3,4-alkylenedioxythiophene) -based capacitors using ionic liquids as supporting electrolytes
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorsJohn R. Reynolds, Kyukwan Zong, John D. Stenger-Smith, Nicole Anderson, Cynthia K. Webber, Andrew P. Chafin
Life of this patent
Estimating the term…
Abstract
A supercapacitor comprising a poly(3,4-ethylendioxythiophene) (PEDOT) and poly(3,4-propylenedioxythiophene) (PProDOT) as electrode couples for the capacitor and a pair of gel electrolyte layers disposed between the electrodes. The gel electrolytes are separated by a battery paper and are selected from a group consisting of a lithium salt and an organic electrolyte.
Claims27
A polymer based charge storage device comprising:
- (a) a pair of spaced apart electrodes, a first electrode of said pair of electrodes consisting of a PProDOT polymer and a second electrode of said pair of electrodes consisting of a PEDOT polymer, said first electrode being an anode for said polymer based charge storage device and said second electrode being a cathode for said polymer based charge storage device;
- (b) a first electrolyte gel and a second electrolyte gel disposed between said pair of spaced apart electrodes;
- and
- (c) a battery paper positioned between said first electrolyte gel and said second electrolyte gel to separate said cathode for said polymer based charge storage device from said anode for said polymer based charge storage device.
1 more element
A polymer based capacitor comprising:
- (a) a pair of spaced apart electrodes, a first electrode of said pair of electrodes comprising poly(3,4-propylenedioxythiophene) and a second electrode of said pair of electrodes comprising poly(3,4-ethylendioxythiophene), said first electrode being an anode for said capacitor and said second electrode being a cathode for said capacitor;
- (b) a first electrolyte gel and a second electrolyte gel disposed between said pair of spaced apart electrodes;
- (c) a battery paper positioned between said first electrolyte gel and said second electrolyte gel to separate said cathode for said capacitor from said anode for said capacitor;
- and
- (d) said first electrolyte gel and said second electrolyte gel comprising 1-ethyl-3-methyl-1H-imidazolium bis(trifluoromethylsulfonyl)imide (EMI-BTI).
2 more elements
A polymer based capacitor comprising:
- (a) a pair of spaced apart electrodes, a first electrode of said pair of electrodes comprising poly(3,4-propylenedioxythiophene) and a second electrode of said pair of electrodes comprising poly(3,4-ethylendioxythiophene), said first electrode being an anode for said capacitor and said second electrode being a cathode for said capacitor;
- (b) a first electrolyte gel and a second electrolyte gel disposed between said pair of spaced apart electrodes;
- (c) a battery paper positioned between said first electrolyte gel and said second electrolyte gel to separate said cathode for said capacitor from said anode for said capacitor;
- and
- (d) said first electrolyte gel and said second electrolyte gel comprising a lithium salt.
2 more elements
A method for making a polymer based charge storage device comprising the steps of:
- (a) electrochemically depositing a thin film of a PEDOT polymer on a first electrode to form a cathode for said polymer based charge storage device and a thin film of PProDOT polymer on a second electrode to form a cathode for said polymer based charge storage device;
- (b) oxidizing said PProDOT polymer at a voltage of about +0.5 volts;
- (c) neutralizing said PEDOT polymer at a voltage of about −0.5 volts;
- (d) rinsing said PEDOT polymer and said PProDOT polymer with a monomer free propylene carbonate (PC)-based electrolyte solution;
- (e) blotting said PEDOT polymer and said PProDOT polymer with a lint free paper;
- (f) coating said PEDOT Polymer with an electrolyte gel to form a first electrolyte gel layer within said polymer baseed charge storage device;
- (g) coating said PEDOT Polymer with said electrolyte gel to form a second electrolyte gel layer within said polymer based charge storage device;
- and
- (h) separating said anode from said cathode within said polymer based charge storage device by placing a battery paper between said first electrolyte gel layer and said second electrolyte gel layer.
6 more elements
Dependencies are inferred from the claim text.