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AssigneeMitsubishi Chemical Corporation
InventorsAkira Yamazaki, Takahiro Sakai, Kohei Yamada
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Provided are: a conductive composition containing a conductive polymer (A) satisfying the below-mentioned condition (i), and a compound (B) having at least 3 hydroxyl groups, and having a pH at 25° C. of a 1 mol/L aqueous solution of no greater than 9.0; a conductive composition that further contains a water-soluble polymer (C) having a hydroxyl group; and a solid electrolytic capacitor having a solid electrolytic layer containing the composition. Condition (i): the volume-average particle size of the smallest particle distribution containing the smallest peak exhibited by the particle size among at least one peak obtained by measuring the particle distribution by means of a dynamic light scattering method using a conductive polymer solution containing 1% by mass of the conductive polymer being less than 26 nm.
A conductive composition, comprising:
Dependencies are inferred from the claim text.
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From the US filing history. Foreign family members aren’t listed.
Organic substances: intrinsically conductive polymers
Wholly aromatic polyamines: polyanilines or derivatives thereof
Alcohols; Metal alcoholates: polyhydroxylic alcohols
Compositions of unspecified macromolecular compounds: characterised by physical features, e.g. anisotropy, viscosity or electrical conductivity
About 7 years 2 months of term left · ends 27 Dec 2033 (estimated)
The present invention relates to a conductive composition and a solid electrolytic capacitor obtained using the same.
This application is based on and claims priorities from Japanese Patent Application No. 2012-229020, filed on Oct. 16, 2012 and Japanese Patent Application No. 2013-12812, filed on Jan. 28, 2013, the disclosures of which are incorporated herein in their entireties by references.
Recently, a solid electrolytic capacitor manufactured by forming a solid electrolytic layer with a conductive polymer on a dielectric oxidation film formed on the surface of an anode body is being developed. For example, a solid electrolytic capacitor is being developed, in which a solid electrolytic layer that is formed using a conductive polymer as a solid electrolyte and a cathode body are sequentially formed on a dielectric oxidation film formed on the surface of an anode body (film-forming metals) that is composed of the porous metal bodies having a valve action, such as, aluminum, niobium, tantalum, titanium, or magnesium.
FIG. 1 is a cross-sectional mimetic diagram illustrating an example of a solid electrolytic capacitor related to an embodiment of the invention;
FIG. 2 is a perspective mimetic diagram illustrating another example of a solid electrolytic capacitor related to an embodiment of the invention; and
FIG. 3 is a mimetic diagram illustrating a particle distribution measured by a dynamic light scattering method of a conductive polymer related to an embodiment of the invention.
Hereinafter, the invention will be described in detail with reference to embodiments.
In addition, for the embodiments of the invention, “a conductive polymer” refers to a conductive polymer, or the components of the polymer for a conductive polymer that is doped (adding dopant) to the components of the polymer.
In addition, “a conductive polymer solution” refers to the solution that is dissolved or dispersed with the components of the polymer for the conductive polymer that is doped to the polymer component.