ETCH SOLUTIONS HAVING BIS(PERFLUOROALKYLSULFONYL)IMIDES, AND USE THEREOF TO FORM ANODE FOILS WITH INCREASED CAPACITANCE
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United States of America Patent
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Issued Date -
Dec 6, 2018
app pub date -
Aug 10, 2018
filing date -
Aug 10, 2018
priority date (Note) -
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Abstract
Anode foil, preferably aluminum anode foil, is etched using a process of treating the foil in an electrolyte bath composition comprising a sulfate, a halide, an oxidizing agent, and a surface active agent. The anode foil is etched in the electrolyte bath composition by passing a charge through the bath. The etched anode foil is suitable for use in an electrolytic capacitor.
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