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Title: Stepped gradient fuel electrode and method for making the same

Abstract

The present invention provides for a method of depositing a stepped-gradient fuel electrode onto a fuel cell support 2 and the resulting fuel cell, that comprises placing a solid oxide fuel cell support that has at least an air electrode layer 4 and an electrolyte layer 6 into an atmospheric plasma spraying chamber and measuring spray parameters of an atmospheric plasma spray to obtain reactive oxides, conductive metal and graphite phases. Then spraying the spray parameters onto the solid oxide fuel cell support to produce multiple sub-layers 8 on the solid oxide fuel cell support, and adjusting a hydrogen usage of the atmospheric plasma spray. The adjusting of the hydrogen usage comprises using high hydrogen levels for the initial spraying of the sub-layers producing a first gradient region, and a lower hydrogen level for subsequent spraying of the sub-layers, producing a second gradient region.

Inventors:
; ;
Issue Date:
Research Org.:
Siemens Energy, Inc., Orlando, FL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1531618
Patent Number(s):
7,637,967
Application Number:
11/298,321
Assignee:
Siemens Energy, Inc. (Orlando, FL)
DOE Contract Number:  
FC26-97FT34139
Resource Type:
Patent
Resource Relation:
Patent File Date: 2005-12-08
Country of Publication:
United States
Language:
English

Citation Formats

Huang, Keqin, Harter, Harold D., and Turkal, Paul G. Stepped gradient fuel electrode and method for making the same. United States: N. p., 2009. Web.
Huang, Keqin, Harter, Harold D., & Turkal, Paul G. Stepped gradient fuel electrode and method for making the same. United States.
Huang, Keqin, Harter, Harold D., and Turkal, Paul G. Tue . "Stepped gradient fuel electrode and method for making the same". United States. https://www.osti.gov/servlets/purl/1531618.
@article{osti_1531618,
title = {Stepped gradient fuel electrode and method for making the same},
author = {Huang, Keqin and Harter, Harold D. and Turkal, Paul G.},
abstractNote = {The present invention provides for a method of depositing a stepped-gradient fuel electrode onto a fuel cell support 2 and the resulting fuel cell, that comprises placing a solid oxide fuel cell support that has at least an air electrode layer 4 and an electrolyte layer 6 into an atmospheric plasma spraying chamber and measuring spray parameters of an atmospheric plasma spray to obtain reactive oxides, conductive metal and graphite phases. Then spraying the spray parameters onto the solid oxide fuel cell support to produce multiple sub-layers 8 on the solid oxide fuel cell support, and adjusting a hydrogen usage of the atmospheric plasma spray. The adjusting of the hydrogen usage comprises using high hydrogen levels for the initial spraying of the sub-layers producing a first gradient region, and a lower hydrogen level for subsequent spraying of the sub-layers, producing a second gradient region.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2009},
month = {12}
}

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Works referenced in this record:

Multi-stage fuel cell arrangement
patent, January 1998


Method for operating a fuel cell assembly
patent, December 1998


Method for modifying the surface of a thermal barrier coating by plasma-heating
patent, August 2000


High power density solid oxide fuel cell having a graded anode
patent, May 2001


Low-cost atmospheric SOFC power generation system
patent, December 2003