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Title: Method of making a layered composite electrode/electrolyte

Abstract

An electrode/electrolyte structure is prepared by a plurality of methods. An unsintered (possibly bisque fired) moderately catalytic electronically-conductive or homogeneous mixed ionic electronic conductive electrode material is deposited on a layer composed of a sintered or unsintered ionically-conductive electrolyte material prior to being sintered. A layer of particulate electrode material is deposited on an unsintered ("green") layer of electrolyte material and the electrode and electrolyte layers are sintered simultaneously, sometimes referred to as "co-firing," under conditions suitable to fully densify the electrolyte while the electrode retains porosity. Or, the layer of particulate electrode material is deposited on a previously sintered layer of electrolyte, and then sintered. Subsequently, a catalytic material is added to the electrode structure by infiltration of an electrolcatalyst precursor (e.g., a metal salt such as a transition metal nitrate). This may be followed by low temperature firing to convert the precursor to catalyst. The invention allows for an electrode with high electronic conductivity and sufficient catalytic activity to achieve high power density in an ionic (electrochemical) device such as fuel cells and electrolytic gas separation systems.

Inventors:
 [1];  [2];  [3]
  1. Berkeley, CA
  2. El Cerrito, CA
  3. Lafayette, CA
Issue Date:
Research Org.:
University of California (Berkeley, CA)
Sponsoring Org.:
USDOE
OSTI Identifier:
1007798
Patent Number(s):
6846511
Application Number:
10/724,558
Assignee:
The Regents of the University of California (Berkeley, CA)
Patent Classifications (CPCs):
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02P - CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
DOE Contract Number:  
AC03-76SF00098
Resource Type:
Patent
Country of Publication:
United States
Language:
English

Citation Formats

Visco, Steven J, Jacobson, Craig P, and DeJonghe, Lutgard C. Method of making a layered composite electrode/electrolyte. United States: N. p., 2005. Web.
Visco, Steven J, Jacobson, Craig P, & DeJonghe, Lutgard C. Method of making a layered composite electrode/electrolyte. United States.
Visco, Steven J, Jacobson, Craig P, and DeJonghe, Lutgard C. Tue . "Method of making a layered composite electrode/electrolyte". United States. https://www.osti.gov/servlets/purl/1007798.
@article{osti_1007798,
title = {Method of making a layered composite electrode/electrolyte},
author = {Visco, Steven J and Jacobson, Craig P and DeJonghe, Lutgard C},
abstractNote = {An electrode/electrolyte structure is prepared by a plurality of methods. An unsintered (possibly bisque fired) moderately catalytic electronically-conductive or homogeneous mixed ionic electronic conductive electrode material is deposited on a layer composed of a sintered or unsintered ionically-conductive electrolyte material prior to being sintered. A layer of particulate electrode material is deposited on an unsintered ("green") layer of electrolyte material and the electrode and electrolyte layers are sintered simultaneously, sometimes referred to as "co-firing," under conditions suitable to fully densify the electrolyte while the electrode retains porosity. Or, the layer of particulate electrode material is deposited on a previously sintered layer of electrolyte, and then sintered. Subsequently, a catalytic material is added to the electrode structure by infiltration of an electrolcatalyst precursor (e.g., a metal salt such as a transition metal nitrate). This may be followed by low temperature firing to convert the precursor to catalyst. The invention allows for an electrode with high electronic conductivity and sufficient catalytic activity to achieve high power density in an ionic (electrochemical) device such as fuel cells and electrolytic gas separation systems.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2005},
month = {1}
}

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Works referenced in this record:

Improved preparation procedure and properties for a multilayer piezoelectric thick-film actuator
journal, November 1998


Microstructures of Y2O3-Stabilized ZrO2 Electron Beam-Physical Vapor Deposition Coatings on Ni-Base Superalloys
journal, April 1994