Solid electrolyte capacitor element, solid electrolyte capacitor, and carbon paste for solid electrolyte capacitor element
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsKeita Uenaka, Kei Hirota, Takahiro Yoshii
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Abstract
A solid electrolytic capacitor element includes an anode body; a dielectric layer formed on a surface of the anode body; a solid electrolyte layer that covers at least a portion of the dielectric layer; and a carbon layer that covers at least a portion of the solid electrolyte layer and contains carbon particles. The carbon layer shows a D/G ratio of 1.5 or less, the D/G ratio being a ratio of an intensity of a D band relative to an intensity of a G band in a Raman spectrum of the carbon layer.
Claims6
A solid electrolytic capacitor element comprising:
- an anode body;
- a dielectric layer formed on a surface of the anode body;
- a solid electrolyte layer that covers at least a portion of the dielectric layer;
- and
- a carbon layer that covers at least a portion of the solid electrolyte layer and contains carbon particles,
- wherein the carbon layer shows a D/G ratio of 1.5 or less, the D/G ratio being a ratio of an intensity of a D band relative to an intensity of a G band in a Raman spectrum of the carbon layer;
- the carbon particles have an average particle size D50 of 0.1 μm or more and 10 μm or less;
- and
- the carbon layer contains a cellulose resin having a carboxy group or a salt thereof.
A carbon paste for a solid electrolytic capacitor element that is used to form a carbon layer included in the solid electrolytic capacitor element, the carbon paste comprising:
- carbon particles;
- and a dispersion medium,
- wherein a dried coating film formed using the carbon paste shows a D/G ratio of 1.5 or less, the D/G ratio being a ratio of an intensity of a D band relative to an intensity of a G band in a Raman spectrum of the dried coating film;
- the carbon particles have an average particle size D50 of 0.1 μm or more and 10 μm or less;
- and
- the carbon layer contains a cellulose resin having a carboxy group or a salt thereof.
Dependencies are inferred from the claim text.