US 8,617,736 B2Granted

Redox electrodes for flexible devices

AssigneeCommonwealth Scientific and Industrial Research Organisation

InventorsAnand Indravadan Bhatt, Graeme Andrew Snook, Adam Samuel Best, Richard James Neil Helmer, Pamela Margaret Petersen

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Abstract

Flexible electrodes comprising: a fabric substrate; a conductive polymer, copolymer or mixture of conductive polymers comprising a first component which has high specific electrochemical capacitance, and a second component which has a lower electrochemical capacitance, lower molecular density, and greater electrical conductivity compared to the first component; and a counterion stable to lithium are described. The first component may be a polymer such as polyaniline or polypyrrole, and second component may be a polymer such as polythiophene or polyEDOT. Copolymers, and polymers formed from co-monomer of these monomer units are also described. The electrodes are used in flexible devices such as flexible energy storage devices.

Claims10

Dependent claims

A flexible electrode comprising:

a fabric substrate;
a first conductive polymer selected from the group consisting of polypvrroles, polyamilines, polyphenyl mercaptans, polycarbazoles, polyindoles, polyfurans, polyoxyphenazines, polypyridines, polypyrimidines, polyquinolines, polybenzimidazoles and polyanthraquinones;
a second conductive polymer which is different to the first conductive polymer and is selected from the polythiophene class;
and
a counterion stable to lithium,
wherein either:
(a) the first conductive polymer and the second conductive polymer are in the form of a mixture of conductive polymers on the fabric substrate,
(b) the first conductive polymer and second conductive polymer are present as separate lavers on the fabric substrate, or
(c) the first conductive polymer and the second conductive polymer ace in the form of a copolymer on the fabric substrate.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 12/988,352Filed 17 Apr 2009
Priority: AU 200890190817 Apr 2008
Published: US 2011/0097624 A128 Apr 2011
Granted: 31 Dec 2013
Term ends: Not estimatedThe source records don’t support an estimate.

Classification19 codes

H01M 4/60
Selection of substances as active materials, active masses, active liquids: of organic compounds
H01G 9/042
Electrodes or formation of dielectric layers thereon: characterised by the material
H01G 11/48
Characterised by their material: conductive polymers
H01G 11/50
Characterised by their material: specially adapted for lithium-ion capacitors, e.g. for lithium-doping or for intercalation