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U.S. Department of Energy
Office of Scientific and Technical Information

Solid electrolyte capacitor process

Patent ·
OSTI ID:6971694

A process is described for making a solid electrolyte capacitor comprising anodizing a porous valve-metal anode pellet to form a dielectric oxide thereon, depositing a layer of solid electrolyte over the dielectric oxide, and depositing at least one carbon layer over the solid electrolyte. One carbon layer contains particles of at least one metal which is more electropositive than a subsequently deposited solderable metal. The solderable metal is deposited onto the carbon layer by a chemical replacement reaction carried out by treating the carbon layer with a metal salt solution to replace the more electropositive metal in the carbon layer by the metal of the metal salt.

Assignee:
Sprague Electric Co., North Adams, MA
Patent Number(s):
US 4622109
OSTI ID:
6971694
Country of Publication:
United States
Language:
English