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Title: Porous electrode preparation method

Abstract

A porous sintered plaque is provided with a bimodal porosity that is especially well suited for use as an electrode within a molten carbonate fuel cell. The coarse porosity is sufficient for admitting gases into contact with the reaction surfaces while the fine porosity is wetted with and retains molten electrolyte on the reaction sites. The electrode structure is prepared by providing a very fine powder of such as nickel oxide and blending the powder with a suitable decomposable binder to form a solid mass. The mass is comminuted into agglomerate size particles substantially larger than the fine oxide particles and formed into a cohesive compact for subsequent sintering. Sintering is carried out at sufficient conditions to bind the agglomerates together into a porous structure having both coarse and fine porosity. Where lithiated nickel oxide cathodes are prepared, the sintering conditions can be moderate enough to retain substantial quantities of lithium within the electrode for adequate conductivity. 2 figs.

Inventors:
;
Issue Date:
OSTI Identifier:
7008502
Patent Number(s):
4410607 A
Application Number:
PPN: US 6-303325
Assignee:
PTO; EDB-94-123473
DOE Contract Number:  
W-31109-ENG-38
Resource Type:
Patent
Resource Relation:
Patent File Date: 17 Sep 1981
Country of Publication:
United States
Language:
English
Subject:
30 DIRECT ENERGY CONVERSION; ELECTRODES; FABRICATION; POROSITY; MOLTEN CARBONATE FUEL CELLS; BINDERS; COMMINUTION; ELECTRIC CONDUCTIVITY; LITHIUM; MIXING; NICKEL OXIDES; ALKALI METALS; CHALCOGENIDES; DIRECT ENERGY CONVERTERS; ELECTRICAL PROPERTIES; ELECTROCHEMICAL CELLS; ELEMENTS; FUEL CELLS; HIGH-TEMPERATURE FUEL CELLS; METALS; NICKEL COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; TRANSITION ELEMENT COMPOUNDS; 300503* - Fuel Cells- Materials, Components, & Auxiliaries

Citation Formats

Arons, R.M., and Dusek, J.T. Porous electrode preparation method. United States: N. p., 1983. Web.
Arons, R.M., & Dusek, J.T. Porous electrode preparation method. United States.
Arons, R.M., and Dusek, J.T. Tue . "Porous electrode preparation method". United States.
@article{osti_7008502,
title = {Porous electrode preparation method},
author = {Arons, R.M. and Dusek, J.T.},
abstractNote = {A porous sintered plaque is provided with a bimodal porosity that is especially well suited for use as an electrode within a molten carbonate fuel cell. The coarse porosity is sufficient for admitting gases into contact with the reaction surfaces while the fine porosity is wetted with and retains molten electrolyte on the reaction sites. The electrode structure is prepared by providing a very fine powder of such as nickel oxide and blending the powder with a suitable decomposable binder to form a solid mass. The mass is comminuted into agglomerate size particles substantially larger than the fine oxide particles and formed into a cohesive compact for subsequent sintering. Sintering is carried out at sufficient conditions to bind the agglomerates together into a porous structure having both coarse and fine porosity. Where lithiated nickel oxide cathodes are prepared, the sintering conditions can be moderate enough to retain substantial quantities of lithium within the electrode for adequate conductivity. 2 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1983},
month = {10}
}