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 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.
- Inventors:
- Issue Date:
- OSTI Identifier:
- 5328729
- Application Number:
- ON: DE82016092
- Assignee:
- Dept. of Energy
- DOE Contract Number:
- W-31-109-ENG-38
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 30 DIRECT ENERGY CONVERSION; ELECTRODES; FABRICATION; MOLTEN CARBONATE FUEL CELLS; BINDERS; NICKEL OXIDES; PARTICLE SIZE; POROSITY; POWDERS; SINTERED MATERIALS; SINTERING; WETTABILITY; CHALCOGENIDES; DIRECT ENERGY CONVERTERS; ELECTROCHEMICAL CELLS; FUEL CELLS; HIGH-TEMPERATURE FUEL CELLS; MATERIALS; NICKEL COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; SIZE; 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., 1981.
Web.
Arons, R M, & Dusek, J T. Porous-electrode preparation method. United States.
Arons, R M, and Dusek, J T. Thu .
"Porous-electrode preparation method". United States.
@article{osti_5328729,
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 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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Sep 17 00:00:00 EDT 1981},
month = {Thu Sep 17 00:00:00 EDT 1981}
}