Compositions – Electrically conductive or emissive compositions – Metal compound containing
Reexamination Certificate
2005-07-09
2011-11-15
Nguyen, Khanh Tuan (Department: 1766)
Compositions
Electrically conductive or emissive compositions
Metal compound containing
C204S288000, C264S043000, C427S115000, C427S202000, C429S223000
Reexamination Certificate
active
08057713
ABSTRACT:
The invention relates to a method for producing electrically conducting nickel oxide surfaces made of nickel-containing material. According to the method, the nickel surface is first degreased and is then roughened for approximately ten minutes in a solution containing about one percent of hydrochloric acid, the process being accelerated by adding hydrogen peroxide solution, resulting in the electrolyte turning green. The nickel surface is briefly wetted, the nickel material is introduced into a solution of 3.5 molar lye to which about ten percent of hydrogen peroxide is added and is kept therein for ten minutes, and the resulting nickel hydroxide surface is dehydrated in a subsequent thermal process and is then further oxidized to obtain nickel oxide. The invention further relates to a conductive boundary layer that is produced according to the method, the electrodes therefrom, and the use thereof in chlorine-alkali electrolysis processes, in fuel cells and storage batteries.
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Beckmann Roland
Dulle Karl-Heinz
Funck Frank
Helmke Joachim
Holthuis Frank
Gaskatel Gessellschaft Fuer Gassysteme Durch Katalyse und Elektr
Marshall & Melhorn LLC
Nguyen Khanh Tuan
UHDE GmbH
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