Electrically conductive paste for electrolytic capacitor, and electrolytic capacitor
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsTakashi Ohbayashi, Yoshihisa Nagasaki, Yuji Miyachi
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Abstract
A conductive paste for an electrolytic capacitor used for connecting a cathode part and a cathode lead terminal of the electrolytic capacitor. The conductive paste includes a thermosetting resin, and conductive particles, and the conductive particles include flaky metal particles and acicular conductive particles. The content of the conductive particles in the conductive paste is, for example, 50 mass % or more and 70 mass % or less, and the mass ratio of the flaky metal particles to the total of the flaky metal particles and the acicular conductive particles is, for example, 60% or more and 80% or less.
Claims21
A conductive paste for an electrolytic capacitor used for connecting a cathode part and a cathode lead terminal of the electrolytic capacitor, the conductive paste comprising:
- no solvent or a solvent of 0.1 mass % or less;
- a thermosetting resin;
- and
- conductive particles, wherein
- a content of the conductive particles in the conductive paste is 50 mass % or more and 70 mass % or less, and
- the conductive particles include flaky metal particles and acicular conductive particles.
An electrolytic capacitor, comprising:
- a capacitor element including an anode part and a cathode part;
- an anode lead terminal electrically connected to the anode part;
- a cathode lead terminal electrically connected to the cathode part;
- and
- a joint portion interposed between the cathode part and the cathode lead terminal, wherein
- the joint portion includes a conductive paste comprising no solvent or a solvent of 0.1 mass % or less, a resin cured product, and conductive particles embedded in the resin cured product,
- the joint portion has a void ratio of 5 vol % or less,
- a content of the conductive particles in the joint portion is 50 mass % or more and 70 mass % or less, and
- the conductive particles include flaky metal particles and acicular conductive particles.
Dependencies are inferred from the claim text.