Aluminum electrode plate for electrolytic capacitor

Details Aluminum electrode plate for electrolytic capacitor Aluminum electrode plate for electrolytic capacitor

2011-03-08

2011-03-08

Ha, Nguyen T (Department: 2835)

Electricity: electrical systems and devices

Electrolytic systems or devices

Liquid electrolytic capacitor

C361S509000, C361S512000, C361S523000, C361S525000, C361S528000

Reexamination Certificate

active

07903391

ABSTRACT:
This invention provides an aluminum electrode plate for an electrolytic capacitor, which, even when the thickness of an etching layer is large, can realize a high level of impregnation of a solid electrolyte and can reduce ESR of a capacitor. An aluminum plate having an aluminum purity of not less than 99.98% by mass is etched to form an etching layer having a depth of 70 μm or above. When a plane cross section of a position deeper than 20 μm from the surface in the etching layer is measured with an image analyzer, for each measured face, not less than 70% of the total number of pits within the measured face is accounted for by pits having a diameter of 0.01 to 1 μm φ; in terms of equivalent circle diameter. The aluminum plate has an aluminum purity of not less than 99.98% by mass and comprises 5 to 50 ppm of Fe and 5 to 40 ppm of Cu with the balance consisting of inevitable impurities. The aluminum plate further contains 1×107to 1010/cm3iron-containing intermetallic compound having a particle diameter of 0.1 to 1.0 μm φ in terms of spheres.

REFERENCES:
patent: 5439565 (1995-08-01), Torii et al.
patent: 6038124 (2000-03-01), Uchi et al.
patent: 6611422 (2003-08-01), Yamazaki et al.
patent: 6620306 (2003-09-01), Yoshimura et al.
patent: 6781817 (2004-08-01), Andelman
patent: 6876541 (2005-04-01), Kato et al.
patent: 7057881 (2006-06-01), Chow et al.
patent: 9-071832 (1997-03-01), None
patent: 2004-319795 (2004-11-01), None
patent: 2005-264288 (2005-09-01), None
Form PCT/ISA/210 (International Search Report) dated Nov. 20, 2007.

Affiliated with

Also associated with

Rating

Aluminum electrode plate for electrolytic capacitor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Aluminum electrode plate for electrolytic capacitor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Aluminum electrode plate for electrolytic capacitor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2660297