Method of fabricating a high power density electrochemical charge storage device
AssigneeMotorola, Inc.
InventorsGretchen E. Fougere, Han Wu, Ke K. Lian
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Abstract
High power density electrochemical capacitors may be pretreated by immersing the electrodes therefore in an alkaline solution. Thereafter the immersed electrode are subjected to high power pulses for brief periods of time. The pretreatment process forms an activated oxide layer on the electrode surface. The resulting device is capable of delivering high current pulses with enhanced discharge voltage.
Claims11
A method of activating an electrode for a high power density charge storage device, said method comprising the steps of:
- providing an electrode consisting of nickel-chromium-molybdenum based alloy material;
- immersing said electrode in an ionic conducting solution for forming an oxide layer on the surface of said electrode;
- and
- passing a current through said electrode.
A method of forming an electrode for a high power density electrochemical charge storage device, said method comprising the steps of:
- providing an electrode consisting of a nickel/chromium/molybdenum based alloy material;
- immersing said electrode in a ionic conducting solution selected from the group consisting of KOH, NaOH, LiOH, KCl, NaCl NH.sub.3 OH, sulfates, nitrates, and combinations thereof, for forming an oxide layer on the surface of said electrode;
- and
- passing a current through said electrode.
Dependencies are inferred from the claim text.