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Title: Low temperature formation of electrode having electrically conductive metal oxide surface

Abstract

A low temperature process is disclosed for forming metal suboxides on substrates by cathodic arc deposition by either controlling the pressure of the oxygen present in the deposition chamber, or by controlling the density of the metal flux, or by a combination of such adjustments, to thereby control the ratio of oxide to metal in the deposited metal suboxide coating. The density of the metal flux may, in turn, be adjusted by controlling the discharge current of the arc, by adjusting the pulse length (duration of on cycle) of the arc, and by adjusting the frequency of the arc, or any combination of these parameters. In a preferred embodiment, a low temperature process is disclosed for forming an electrically conductive metal suboxide, such as, for example, an electrically conductive suboxide of titanium, on an electrode surface, such as the surface of a nickel oxide electrode, by such cathodic arc deposition and control of the deposition parameters. In the preferred embodiment, the process results in a titanium suboxide-coated nickel oxide electrode exhibiting reduced parasitic evolution of oxygen during charging of a cell made using such an electrode as the positive electrode, as well as exhibiting high oxygen overpotential, resulting in suppressionmore » of oxygen evolution at the electrode at full charge of the cell.« less

Inventors:
 [1];  [1];  [2];  [3];  [2]
  1. (Albany, CA)
  2. (Berkeley, CA)
  3. (Orinda, CA)
Issue Date:
Research Org.:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA
OSTI Identifier:
871933
Patent Number(s):
5827580
Assignee:
Regents of University of California (Oakland, CA) LBNL
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
temperature; formation; electrode; electrically; conductive; metal; oxide; surface; process; disclosed; forming; suboxides; substrates; cathodic; deposition; controlling; pressure; oxygen; chamber; density; flux; combination; adjustments; control; ratio; deposited; suboxide; coating; adjusted; discharge; current; adjusting; pulse; length; duration; cycle; frequency; parameters; preferred; embodiment; example; titanium; nickel; results; suboxide-coated; exhibiting; reduced; parasitic; evolution; charging; cell; positive; overpotential; resulting; suppression; charge; oxide electrode; forming metal; process results; deposition parameters; discharge current; pulse length; oxide surface; oxide coating; deposition chamber; positive electrode; metal oxide; electrically conductive; preferred embodiment; nickel oxide; electrode surface; conductive metal; temperature process; temperature formation; oxygen evolution; charge current; exhibiting reduced; /427/

Citation Formats

Anders, Simone, Anders, Andre, Brown, Ian G., McLarnon, Frank R., and Kong, Fanping. Low temperature formation of electrode having electrically conductive metal oxide surface. United States: N. p., 1998. Web.
Anders, Simone, Anders, Andre, Brown, Ian G., McLarnon, Frank R., & Kong, Fanping. Low temperature formation of electrode having electrically conductive metal oxide surface. United States.
Anders, Simone, Anders, Andre, Brown, Ian G., McLarnon, Frank R., and Kong, Fanping. Thu . "Low temperature formation of electrode having electrically conductive metal oxide surface". United States. https://www.osti.gov/servlets/purl/871933.
@article{osti_871933,
title = {Low temperature formation of electrode having electrically conductive metal oxide surface},
author = {Anders, Simone and Anders, Andre and Brown, Ian G. and McLarnon, Frank R. and Kong, Fanping},
abstractNote = {A low temperature process is disclosed for forming metal suboxides on substrates by cathodic arc deposition by either controlling the pressure of the oxygen present in the deposition chamber, or by controlling the density of the metal flux, or by a combination of such adjustments, to thereby control the ratio of oxide to metal in the deposited metal suboxide coating. The density of the metal flux may, in turn, be adjusted by controlling the discharge current of the arc, by adjusting the pulse length (duration of on cycle) of the arc, and by adjusting the frequency of the arc, or any combination of these parameters. In a preferred embodiment, a low temperature process is disclosed for forming an electrically conductive metal suboxide, such as, for example, an electrically conductive suboxide of titanium, on an electrode surface, such as the surface of a nickel oxide electrode, by such cathodic arc deposition and control of the deposition parameters. In the preferred embodiment, the process results in a titanium suboxide-coated nickel oxide electrode exhibiting reduced parasitic evolution of oxygen during charging of a cell made using such an electrode as the positive electrode, as well as exhibiting high oxygen overpotential, resulting in suppression of oxygen evolution at the electrode at full charge of the cell.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1998},
month = {1}
}

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