Wet electrolytic capacitor containing a gelled working electrolyte

Patent metadata

Field	Value
Publication number	US-9105401-B2
Application number	US-201213685755-A
Country	US
Kind code	B2
Filing date	Nov 27, 2012
Priority date	Dec 2, 2011
Publication date	Aug 11, 2015
Grant date	Aug 11, 2015

Abstract

A wet electrolytic capacitor is provided. The capacitor contains an anode comprising an anodically oxidized pellet formed from a pressed and sintered powder, a cathode that contains a metal substrate coated with a conductive polymer, and a working electrolyte in communication with the anode and the cathode. The working electrolyte is in the form of a gel and comprises an ammonium salt of an organic acid, inorganic oxide particles, an acid, and a solvent system that comprises water. The working electrolyte has a pH value of from about 5.0 to about 8.0.

First claim

What is claimed is:

1. A wet electrolytic capacitor comprising:
an anode comprising an anodically oxidized pellet formed from a pressed and sintered powder, wherein the powder is formed from tantalum particles;
a cathode that comprises a metal substrate coated with a conductive polymer; and
a working electrolyte in communication with the anode and the cathode, wherein the working electrolyte is in the form of a gel and comprises an ammonium salt of an organic acid, inorganic o…

Assignees

• Avx Corp

Inventors

• Dreissig Dirk H
• Bates James Steven
• Ritter Andrew Paul
• Sebald Zebbie Lynn
• Weaver Mitchell D
• Pease Robert Hazen

Classifications

• H01G11/60

  Electricity · mapped topic

• H01G9/0425

  Electricity · mapped topic

• H01G11/64

  Electricity · mapped topic

• H01G9/0036

  Electricity · mapped topic

• H01G9/035 Primary

  Electricity · mapped topic