Wet electrolytic capacitor containing an improved anode
First Claim
Patent Images
1. A wet electrolytic capacitor comprising:
- an anode containing a sintered porous anode body that extends in a longitudinal direction and is coated with a dielectric, wherein the anode body contains a sidewall positioned between a proximal end and an opposing distal end, wherein a longitudinally extending channel is recessed into the sidewall, wherein the channel has an aspect ratio of from about 10 to about 200;
a fluid electrolyte; and
a cathode that contains a substrate.
2 Assignments
0 Petitions
Accused Products
Abstract
A wet electrolytic capacitor that includes a sintered porous anode body containing a dielectric layer, a fluid electrolyte, and a cathode is provided. At least one longitudinally extending channel is recessed into the anode body. The channel may have a relatively high aspect ratio (length divided by width), such as about 2 or more, in some embodiments about 5 or more, in some embodiments from about 10 to about 200, in some embodiments from about 15 to about 150, in some embodiments from about 20 to about 100, and in some embodiments, from about 30 to about 60.
94 Citations
32 Claims
-
1. A wet electrolytic capacitor comprising:
-
an anode containing a sintered porous anode body that extends in a longitudinal direction and is coated with a dielectric, wherein the anode body contains a sidewall positioned between a proximal end and an opposing distal end, wherein a longitudinally extending channel is recessed into the sidewall, wherein the channel has an aspect ratio of from about 10 to about 200; a fluid electrolyte; and a cathode that contains a substrate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
-
-
27. A wet electrolytic capacitor comprising:
-
an anode containing a generally cylindrical, sintered porous anode body having a sidewall positioned between a proximal end and an opposing distal end, the anode body being coated with a dielectric, wherein a plurality of longitudinally extending channels are recessed into the sidewall of the anode body, wherein the channels have an aspect ratio of from about 10 to about 200, the anode body containing tantalum, niobium, or an electrically conductive oxide thereof, wherein the anode further comprises an anode lead wire that extends from the proximal end of the anode in the longitudinal direction; an aqueous fluid electrolyte; and a generally cylindrical metal casing within which the anode and the fluid electrolyte are positioned, wherein an electrochemically active material is disposed on an interior surface of the casing. - View Dependent Claims (28, 29, 30, 31)
-
-
32. A method for forming a wet electrolytic capacitor, the method comprising:
-
pressing a powder into a porous anode body that extends in a longitudinal direction, wherein a longitudinally extending channel is recessed into the anode body, wherein the channel has an aspect ratio of from about 10 to about 200; sintering the porous anode body; anodically oxidizing the sintered;
anode body to form an anode; andplacing the anode into electrical communication with a cathode and a fluid electrolyte.
-
Specification