Redox electrodes for flexible devices

H - Electricity – 01 – M

Patent

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Details

H01M 4/02 (2006.01) B32B 7/02 (2006.01) B32B 27/12 (2006.01) H01G 9/042 (2006.01) H01M 4/60 (2006.01)

Patent

CA 2721580

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.

La présente invention concerne des électrodes flexibles qui comprennent : - un substrat de tissu; - un polymère conducteur, un copolymère conducteur ou un mélange de polymères conducteurs qui comprend un premier composant qui possède une capacité électrochimique, spécifique élevée, et un second composant qui possède une capacité électrochimique plus faible, une densité moléculaire plus faible et une conductivité électrique plus importante par rapport au premier composant; et - un contre-ion stable au lithium. Le premier composant peut être un polymère tel que la polyaniline ou le polypyrrole, et le second composant peut être un polymère tel que le polythiofène ou polyEDOT. L'invention concerne aussi des copolymères, et des polymères formés à partir de co-monomère de ces unités monomères. Les électrodes sont utilisées dans des dispositifs flexibles tels que des dispositifs de stockage dénergie flexibles.

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