Cathode for use in a wet capacitor
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 2, 2012
Grant Date -
Jun 10, 2010
app pub date -
Dec 9, 2008
filing date -
Dec 9, 2008
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A cathode containing a metal substrate that possesses a micro-roughened surface imparted by spark anodization is provided. The surface is formed by contacting the substrate with an electrolytic solution and applying a voltage to form a dielectric sub-oxide layer. The voltage is raised to a sufficiently high level to initiate “sparking” at the surface of the substrate, which is believed to create high local surface temperatures sufficient to etch away the substrate. This results in the formation of a “micro-roughened” surface having a plurality elevated regions. These elevated regions can increase the effective surface area and thus allow for the formation of capacitors with increased cathode capacitance for a given size and/or capacitors with a reduced size for a given capacitance. The elevated regions may also exhibit excellent adhesion to additional electrochemically-active materials and provide enhanced stability in certain liquid electrolytes.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully